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Finding the Fourth Proportional to 291,902.28, 437,871.88 and 123,391.20

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Solution

The fourth proportional to 291,902.28, 437,871.88 and 123,391.20 is: 185,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,902.28 : 437,871.88 = 123,391.20 : x
  2. Step 2: Convert to fraction form
    291,902.28/437,871.88 = 123,391.20/x
  3. Step 3: Cross multiply
    291,902.28x = 437,871.88 × 123,391.20
  4. Step 4: Simplify right side
    291,902.28x = 54,029,536,719.46
  5. Step 5: Solve for x
    x = 54,029,536,719.46/291,902.28
  6. Step 6: Final answer
    x = 185,094.60

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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.