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Finding the Fourth Proportional to 230,882.42, 318,614.63 and 128,909.44

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Solution

The fourth proportional to 230,882.42, 318,614.63 and 128,909.44 is: 177,893.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,882.42 : 318,614.63 = 128,909.44 : x
  2. Step 2: Convert to fraction form
    230,882.42/318,614.63 = 128,909.44/x
  3. Step 3: Cross multiply
    230,882.42x = 318,614.63 × 128,909.44
  4. Step 4: Simplify right side
    230,882.42x = 41,072,433,529.11
  5. Step 5: Solve for x
    x = 41,072,433,529.11/230,882.42
  6. Step 6: Final answer
    x = 177,893.29

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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.