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Finding the Fourth Proportional to 284,315.66, 392,345.32 and 156,988.52

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Solution

The fourth proportional to 284,315.66, 392,345.32 and 156,988.52 is: 216,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,315.66 : 392,345.32 = 156,988.52 : x
  2. Step 2: Convert to fraction form
    284,315.66/392,345.32 = 156,988.52/x
  3. Step 3: Cross multiply
    284,315.66x = 392,345.32 × 156,988.52
  4. Step 4: Simplify right side
    284,315.66x = 61,593,711,115.73
  5. Step 5: Solve for x
    x = 61,593,711,115.73/284,315.66
  6. Step 6: Final answer
    x = 216,638.48

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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.