Home / 239,654,048.72-330,721,866.44-129,645,731.28

Finding the Fourth Proportional to 239,654,048.72, 330,721,866.44 and 129,645,731.28

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Solution

The fourth proportional to 239,654,048.72, 330,721,866.44 and 129,645,731.28 is: 178,910,719.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,654,048.72 : 330,721,866.44 = 129,645,731.28 : x
  2. Step 2: Convert to fraction form
    239,654,048.72/330,721,866.44 = 129,645,731.28/x
  3. Step 3: Cross multiply
    239,654,048.72x = 330,721,866.44 × 129,645,731.28
  4. Step 4: Simplify right side
    239,654,048.72x = 42,876,678,224,900,288
  5. Step 5: Solve for x
    x = 42,876,678,224,900,288/239,654,048.72
  6. Step 6: Final answer
    x = 178,910,719.24

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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.