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Finding the Fourth Proportional to 291,937.20, 437,560.20 and 123,457.20

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Solution

The fourth proportional to 291,937.20, 437,560.20 and 123,457.20 is: 185,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,937.20 : 437,560.20 = 123,457.20 : x
  2. Step 2: Convert to fraction form
    291,937.20/437,560.20 = 123,457.20/x
  3. Step 3: Cross multiply
    291,937.20x = 437,560.20 × 123,457.20
  4. Step 4: Simplify right side
    291,937.20x = 54,019,957,123.44
  5. Step 5: Solve for x
    x = 54,019,957,123.44/291,937.20
  6. Step 6: Final answer
    x = 185,039.65

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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.