Home / 319,231,498,540.80-440,540,635,016.16-172,743,960,697.68

Finding the Fourth Proportional to 319,231,498,540.80, 440,540,635,016.16 and 172,743,960,697.68

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Solution

The fourth proportional to 319,231,498,540.80, 440,540,635,016.16 and 172,743,960,697.68 is: 238,387,297,271.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,231,498,540.80 : 440,540,635,016.16 = 172,743,960,697.68 : x
  2. Step 2: Convert to fraction form
    319,231,498,540.80/440,540,635,016.16 = 172,743,960,697.68/x
  3. Step 3: Cross multiply
    319,231,498,540.80x = 440,540,635,016.16 × 172,743,960,697.68
  4. Step 4: Simplify right side
    319,231,498,540.80x = 76,100,734,140,962,526,199,808
  5. Step 5: Solve for x
    x = 76,100,734,140,962,526,199,808/319,231,498,540.80
  6. Step 6: Final answer
    x = 238,387,297,271.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.