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Finding the Fourth Proportional to 437,113.64, 655,638.45 and 137,679.85

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Solution

The fourth proportional to 437,113.64, 655,638.45 and 137,679.85 is: 206,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,113.64 : 655,638.45 = 137,679.85 : x
  2. Step 2: Convert to fraction form
    437,113.64/655,638.45 = 137,679.85/x
  3. Step 3: Cross multiply
    437,113.64x = 655,638.45 × 137,679.85
  4. Step 4: Simplify right side
    437,113.64x = 90,268,204,527.93
  5. Step 5: Solve for x
    x = 90,268,204,527.93/437,113.64
  6. Step 6: Final answer
    x = 206,509.70

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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.