Home / 319,421,206.20-440,802,593.10-172,743,490.20

Finding the Fourth Proportional to 319,421,206.20, 440,802,593.10 and 172,743,490.20

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Solution

The fourth proportional to 319,421,206.20, 440,802,593.10 and 172,743,490.20 is: 238,386,734.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,421,206.20 : 440,802,593.10 = 172,743,490.20 : x
  2. Step 2: Convert to fraction form
    319,421,206.20/440,802,593.10 = 172,743,490.20/x
  3. Step 3: Cross multiply
    319,421,206.20x = 440,802,593.10 × 172,743,490.20
  4. Step 4: Simplify right side
    319,421,206.20x = 76,145,778,421,304,432
  5. Step 5: Solve for x
    x = 76,145,778,421,304,432/319,421,206.20
  6. Step 6: Final answer
    x = 238,386,734.95

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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.