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Finding the Fourth Proportional to 231,000.66, 318,777.54 and 129,027.57

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Solution

The fourth proportional to 231,000.66, 318,777.54 and 129,027.57 is: 178,056.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,000.66 : 318,777.54 = 129,027.57 : x
  2. Step 2: Convert to fraction form
    231,000.66/318,777.54 = 129,027.57/x
  3. Step 3: Cross multiply
    231,000.66x = 318,777.54 × 129,027.57
  4. Step 4: Simplify right side
    231,000.66x = 41,131,091,356.78
  5. Step 5: Solve for x
    x = 41,131,091,356.78/231,000.66
  6. Step 6: Final answer
    x = 178,056.16

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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.