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Finding the Fourth Proportional to 284,237.88, 392,237.91 and 156,910.74

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Solution

The fourth proportional to 284,237.88, 392,237.91 and 156,910.74 is: 216,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,237.88 : 392,237.91 = 156,910.74 : x
  2. Step 2: Convert to fraction form
    284,237.88/392,237.91 = 156,910.74/x
  3. Step 3: Cross multiply
    284,237.88x = 392,237.91 × 156,910.74
  4. Step 4: Simplify right side
    284,237.88x = 61,546,340,714.15
  5. Step 5: Solve for x
    x = 61,546,340,714.15/284,237.88
  6. Step 6: Final answer
    x = 216,531.10

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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.