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Finding the Fourth Proportional to 215,373.94, 323,063.64 and 75,132.56

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Solution

The fourth proportional to 215,373.94, 323,063.64 and 75,132.56 is: 112,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,373.94 : 323,063.64 = 75,132.56 : x
  2. Step 2: Convert to fraction form
    215,373.94/323,063.64 = 75,132.56/x
  3. Step 3: Cross multiply
    215,373.94x = 323,063.64 × 75,132.56
  4. Step 4: Simplify right side
    215,373.94x = 24,272,599,123.78
  5. Step 5: Solve for x
    x = 24,272,599,123.78/215,373.94
  6. Step 6: Final answer
    x = 112,699.80

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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.