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Finding the Fourth Proportional to 266,641.83, 399,923.42 and 98,123.01

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Solution

The fourth proportional to 266,641.83, 399,923.42 and 98,123.01 is: 147,170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,641.83 : 399,923.42 = 98,123.01 : x
  2. Step 2: Convert to fraction form
    266,641.83/399,923.42 = 98,123.01/x
  3. Step 3: Cross multiply
    266,641.83x = 399,923.42 × 98,123.01
  4. Step 4: Simplify right side
    266,641.83x = 39,241,689,249.28
  5. Step 5: Solve for x
    x = 39,241,689,249.28/266,641.83
  6. Step 6: Final answer
    x = 147,170.04

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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.