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Finding the Fourth Proportional to 377,479.40, 565,715.76 and 140,583.56

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Solution

The fourth proportional to 377,479.40, 565,715.76 and 140,583.56 is: 210,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,479.40 : 565,715.76 = 140,583.56 : x
  2. Step 2: Convert to fraction form
    377,479.40/565,715.76 = 140,583.56/x
  3. Step 3: Cross multiply
    377,479.40x = 565,715.76 × 140,583.56
  4. Step 4: Simplify right side
    377,479.40x = 79,530,335,488.91
  5. Step 5: Solve for x
    x = 79,530,335,488.91/377,479.40
  6. Step 6: Final answer
    x = 210,687.88

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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.