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Finding the Fourth Proportional to 235,123.52, 352,767.20 and 87,421.76

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Solution

The fourth proportional to 235,123.52, 352,767.20 and 87,421.76 is: 131,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,123.52 : 352,767.20 = 87,421.76 : x
  2. Step 2: Convert to fraction form
    235,123.52/352,767.20 = 87,421.76/x
  3. Step 3: Cross multiply
    235,123.52x = 352,767.20 × 87,421.76
  4. Step 4: Simplify right side
    235,123.52x = 30,839,529,494.27
  5. Step 5: Solve for x
    x = 30,839,529,494.27/235,123.52
  6. Step 6: Final answer
    x = 131,163.10

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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.