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Finding the Fourth Proportional to 230,540.52, 318,145.30 and 128,566.10

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Solution

The fourth proportional to 230,540.52, 318,145.30 and 128,566.10 is: 177,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,540.52 : 318,145.30 = 128,566.10 : x
  2. Step 2: Convert to fraction form
    230,540.52/318,145.30 = 128,566.10/x
  3. Step 3: Cross multiply
    230,540.52x = 318,145.30 × 128,566.10
  4. Step 4: Simplify right side
    230,540.52x = 40,902,700,454.33
  5. Step 5: Solve for x
    x = 40,902,700,454.33/230,540.52
  6. Step 6: Final answer
    x = 177,420.87

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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.