Home / 319,421,014.80-440,802,328.74-172,743,298.80

Finding the Fourth Proportional to 319,421,014.80, 440,802,328.74 and 172,743,298.80

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Solution

The fourth proportional to 319,421,014.80, 440,802,328.74 and 172,743,298.80 is: 238,386,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,421,014.80 : 440,802,328.74 = 172,743,298.80 : x
  2. Step 2: Convert to fraction form
    319,421,014.80/440,802,328.74 = 172,743,298.80/x
  3. Step 3: Cross multiply
    319,421,014.80x = 440,802,328.74 × 172,743,298.80
  4. Step 4: Simplify right side
    319,421,014.80x = 76,145,648,385,269,648
  5. Step 5: Solve for x
    x = 76,145,648,385,269,648/319,421,014.80
  6. Step 6: Final answer
    x = 238,386,470.70

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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.