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Finding the Fourth Proportional to 424,476.59, 636,793.64 and 140,186.84

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Solution

The fourth proportional to 424,476.59, 636,793.64 and 140,186.84 is: 210,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,476.59 : 636,793.64 = 140,186.84 : x
  2. Step 2: Convert to fraction form
    424,476.59/636,793.64 = 140,186.84/x
  3. Step 3: Cross multiply
    424,476.59x = 636,793.64 × 140,186.84
  4. Step 4: Simplify right side
    424,476.59x = 89,270,088,123.70
  5. Step 5: Solve for x
    x = 89,270,088,123.70/424,476.59
  6. Step 6: Final answer
    x = 210,306.27

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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.