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Finding the Fourth Proportional to 230,549.12, 318,160.22 and 129,947.12

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Solution

The fourth proportional to 230,549.12, 318,160.22 and 129,947.12 is: 179,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,549.12 : 318,160.22 = 129,947.12 : x
  2. Step 2: Convert to fraction form
    230,549.12/318,160.22 = 129,947.12/x
  3. Step 3: Cross multiply
    230,549.12x = 318,160.22 × 129,947.12
  4. Step 4: Simplify right side
    230,549.12x = 41,344,004,287.57
  5. Step 5: Solve for x
    x = 41,344,004,287.57/230,549.12
  6. Step 6: Final answer
    x = 179,328.40

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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.