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Finding the Fourth Proportional to 291,787.70, 437,438.55 and 123,437.30

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Solution

The fourth proportional to 291,787.70, 437,438.55 and 123,437.30 is: 185,053.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,787.70 : 437,438.55 = 123,437.30 : x
  2. Step 2: Convert to fraction form
    291,787.70/437,438.55 = 123,437.30/x
  3. Step 3: Cross multiply
    291,787.70x = 437,438.55 × 123,437.30
  4. Step 4: Simplify right side
    291,787.70x = 53,996,233,527.92
  5. Step 5: Solve for x
    x = 53,996,233,527.92/291,787.70
  6. Step 6: Final answer
    x = 185,053.15

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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.