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Finding the Fourth Proportional to 649,715.80, 974,640.55 and 245,248.70

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Solution

The fourth proportional to 649,715.80, 974,640.55 and 245,248.70 is: 367,898.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,715.80 : 974,640.55 = 245,248.70 : x
  2. Step 2: Convert to fraction form
    649,715.80/974,640.55 = 245,248.70/x
  3. Step 3: Cross multiply
    649,715.80x = 974,640.55 × 245,248.70
  4. Step 4: Simplify right side
    649,715.80x = 239,029,327,241.66
  5. Step 5: Solve for x
    x = 239,029,327,241.66/649,715.80
  6. Step 6: Final answer
    x = 367,898.28

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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.