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Finding the Fourth Proportional to 288,491.68, 432,778.48 and 88,828.64

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Solution

The fourth proportional to 288,491.68, 432,778.48 and 88,828.64 is: 133,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,491.68 : 432,778.48 = 88,828.64 : x
  2. Step 2: Convert to fraction form
    288,491.68/432,778.48 = 88,828.64/x
  3. Step 3: Cross multiply
    288,491.68x = 432,778.48 × 88,828.64
  4. Step 4: Simplify right side
    288,491.68x = 38,443,123,799.67
  5. Step 5: Solve for x
    x = 38,443,123,799.67/288,491.68
  6. Step 6: Final answer
    x = 133,255.57

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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.