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Finding the Fourth Proportional to 215,726.59, 323,735.69 and 75,486.43

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Solution

The fourth proportional to 215,726.59, 323,735.69 and 75,486.43 is: 113,280.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,726.59 : 323,735.69 = 75,486.43 : x
  2. Step 2: Convert to fraction form
    215,726.59/323,735.69 = 75,486.43/x
  3. Step 3: Cross multiply
    215,726.59x = 323,735.69 × 75,486.43
  4. Step 4: Simplify right side
    215,726.59x = 24,437,651,501.69
  5. Step 5: Solve for x
    x = 24,437,651,501.69/215,726.59
  6. Step 6: Final answer
    x = 113,280.66

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1.5x scale

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.