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Finding the Fourth Proportional to 230,580.24, 318,197.88 and 129,978.24

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Solution

The fourth proportional to 230,580.24, 318,197.88 and 129,978.24 is: 179,368.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,580.24 : 318,197.88 = 129,978.24 : x
  2. Step 2: Convert to fraction form
    230,580.24/318,197.88 = 129,978.24/x
  3. Step 3: Cross multiply
    230,580.24x = 318,197.88 × 129,978.24
  4. Step 4: Simplify right side
    230,580.24x = 41,358,800,414.13
  5. Step 5: Solve for x
    x = 41,358,800,414.13/230,580.24
  6. Step 6: Final answer
    x = 179,368.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.