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Finding the Fourth Proportional to 284,221.56, 392,226.28 and 156,897.30

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Solution

The fourth proportional to 284,221.56, 392,226.28 and 156,897.30 is: 216,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,221.56 : 392,226.28 = 156,897.30 : x
  2. Step 2: Convert to fraction form
    284,221.56/392,226.28 = 156,897.30/x
  3. Step 3: Cross multiply
    284,221.56x = 392,226.28 × 156,897.30
  4. Step 4: Simplify right side
    284,221.56x = 61,539,244,321.04
  5. Step 5: Solve for x
    x = 61,539,244,321.04/284,221.56
  6. Step 6: Final answer
    x = 216,518.57

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1.5x scale

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.