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Finding the Fourth Proportional to 438,123.23, 656,902.23 and 171,910.64

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Solution

The fourth proportional to 438,123.23, 656,902.23 and 171,910.64 is: 257,755.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,123.23 : 656,902.23 = 171,910.64 : x
  2. Step 2: Convert to fraction form
    438,123.23/656,902.23 = 171,910.64/x
  3. Step 3: Cross multiply
    438,123.23x = 656,902.23 × 171,910.64
  4. Step 4: Simplify right side
    438,123.23x = 112,928,482,776.73
  5. Step 5: Solve for x
    x = 112,928,482,776.73/438,123.23
  6. Step 6: Final answer
    x = 257,755.07

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1.5x scale

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.