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Finding the Fourth Proportional to 436,787.34, 655,338.65 and 152,519.78

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Solution

The fourth proportional to 436,787.34, 655,338.65 and 152,519.78 is: 228,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,787.34 : 655,338.65 = 152,519.78 : x
  2. Step 2: Convert to fraction form
    436,787.34/655,338.65 = 152,519.78/x
  3. Step 3: Cross multiply
    436,787.34x = 655,338.65 × 152,519.78
  4. Step 4: Simplify right side
    436,787.34x = 99,952,102,684.20
  5. Step 5: Solve for x
    x = 99,952,102,684.20/436,787.34
  6. Step 6: Final answer
    x = 228,834.71

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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.