Home / 381,979.36-572,969.14-142,061.91

Finding the Fourth Proportional to 381,979.36, 572,969.14 and 142,061.91

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Solution

The fourth proportional to 381,979.36, 572,969.14 and 142,061.91 is: 213,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,979.36 : 572,969.14 = 142,061.91 : x
  2. Step 2: Convert to fraction form
    381,979.36/572,969.14 = 142,061.91/x
  3. Step 3: Cross multiply
    381,979.36x = 572,969.14 × 142,061.91
  4. Step 4: Simplify right side
    381,979.36x = 81,397,090,044.30
  5. Step 5: Solve for x
    x = 81,397,090,044.30/381,979.36
  6. Step 6: Final answer
    x = 213,092.90

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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.