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Finding the Fourth Proportional to 306,475.20, 458,859.60 and 156,391.20

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Solution

The fourth proportional to 306,475.20, 458,859.60 and 156,391.20 is: 234,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,475.20 : 458,859.60 = 156,391.20 : x
  2. Step 2: Convert to fraction form
    306,475.20/458,859.60 = 156,391.20/x
  3. Step 3: Cross multiply
    306,475.20x = 458,859.60 × 156,391.20
  4. Step 4: Simplify right side
    306,475.20x = 71,761,603,475.52
  5. Step 5: Solve for x
    x = 71,761,603,475.52/306,475.20
  6. Step 6: Final answer
    x = 234,151.42

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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.