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Finding the Fourth Proportional to 456,116.70, 684,320.85 and 156,789.30

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Solution

The fourth proportional to 456,116.70, 684,320.85 and 156,789.30 is: 235,234.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,116.70 : 684,320.85 = 156,789.30 : x
  2. Step 2: Convert to fraction form
    456,116.70/684,320.85 = 156,789.30/x
  3. Step 3: Cross multiply
    456,116.70x = 684,320.85 × 156,789.30
  4. Step 4: Simplify right side
    456,116.70x = 107,294,187,046.91
  5. Step 5: Solve for x
    x = 107,294,187,046.91/456,116.70
  6. Step 6: Final answer
    x = 235,234.07

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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.