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Finding the Fourth Proportional to 436,671.70, 654,611.55 and 156,123.70

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Solution

The fourth proportional to 436,671.70, 654,611.55 and 156,123.70 is: 234,043.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,671.70 : 654,611.55 = 156,123.70 : x
  2. Step 2: Convert to fraction form
    436,671.70/654,611.55 = 156,123.70/x
  3. Step 3: Cross multiply
    436,671.70x = 654,611.55 × 156,123.70
  4. Step 4: Simplify right side
    436,671.70x = 102,200,377,248.74
  5. Step 5: Solve for x
    x = 102,200,377,248.74/436,671.70
  6. Step 6: Final answer
    x = 234,043.97

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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.