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Finding the Fourth Proportional to 437,891.64, 656,833.52 and 138,372.27

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Solution

The fourth proportional to 437,891.64, 656,833.52 and 138,372.27 is: 207,557.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,891.64 : 656,833.52 = 138,372.27 : x
  2. Step 2: Convert to fraction form
    437,891.64/656,833.52 = 138,372.27/x
  3. Step 3: Cross multiply
    437,891.64x = 656,833.52 × 138,372.27
  4. Step 4: Simplify right side
    437,891.64x = 90,887,544,482.63
  5. Step 5: Solve for x
    x = 90,887,544,482.63/437,891.64
  6. Step 6: Final answer
    x = 207,557.16

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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.