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Finding the Fourth Proportional to 251,909.10, 377,855.55 and 83,437.20

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Solution

The fourth proportional to 251,909.10, 377,855.55 and 83,437.20 is: 125,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,909.10 : 377,855.55 = 83,437.20 : x
  2. Step 2: Convert to fraction form
    251,909.10/377,855.55 = 83,437.20/x
  3. Step 3: Cross multiply
    251,909.10x = 377,855.55 × 83,437.20
  4. Step 4: Simplify right side
    251,909.10x = 31,527,209,096.46
  5. Step 5: Solve for x
    x = 31,527,209,096.46/251,909.10
  6. Step 6: Final answer
    x = 125,153.12

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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.