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Finding the Fourth Proportional to 545,672.10, 818,508.15 and 356,715.30

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Solution

The fourth proportional to 545,672.10, 818,508.15 and 356,715.30 is: 535,072.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,672.10 : 818,508.15 = 356,715.30 : x
  2. Step 2: Convert to fraction form
    545,672.10/818,508.15 = 356,715.30/x
  3. Step 3: Cross multiply
    545,672.10x = 818,508.15 × 356,715.30
  4. Step 4: Simplify right side
    545,672.10x = 291,974,380,279.70
  5. Step 5: Solve for x
    x = 291,974,380,279.70/545,672.10
  6. Step 6: Final answer
    x = 535,072.95

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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.