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Finding the Fourth Proportional to 316,927,996.80, 475,391,995.20 and 273,090,019.20

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Solution

The fourth proportional to 316,927,996.80, 475,391,995.20 and 273,090,019.20 is: 409,635,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,927,996.80 : 475,391,995.20 = 273,090,019.20 : x
  2. Step 2: Convert to fraction form
    316,927,996.80/475,391,995.20 = 273,090,019.20/x
  3. Step 3: Cross multiply
    316,927,996.80x = 475,391,995.20 × 273,090,019.20
  4. Step 4: Simplify right side
    316,927,996.80x = 129,824,809,096,694,304
  5. Step 5: Solve for x
    x = 129,824,809,096,694,304/316,927,996.80
  6. Step 6: Final answer
    x = 409,635,028.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.