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Finding the Fourth Proportional to 150,479.76, 225,720 and 38,160

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Solution

The fourth proportional to 150,479.76, 225,720 and 38,160 is: 57,240.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,479.76 : 225,720 = 38,160 : x
  2. Step 2: Convert to fraction form
    150,479.76/225,720 = 38,160/x
  3. Step 3: Cross multiply
    150,479.76x = 225,720 × 38,160
  4. Step 4: Simplify right side
    150,479.76x = 8,613,475,200
  5. Step 5: Solve for x
    x = 8,613,475,200/150,479.76
  6. Step 6: Final answer
    x = 57,240.09

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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.