Home / 231,478.12-319,445.22-130,876.84

Finding the Fourth Proportional to 231,478.12, 319,445.22 and 130,876.84

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Solution

The fourth proportional to 231,478.12, 319,445.22 and 130,876.84 is: 180,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,478.12 : 319,445.22 = 130,876.84 : x
  2. Step 2: Convert to fraction form
    231,478.12/319,445.22 = 130,876.84/x
  3. Step 3: Cross multiply
    231,478.12x = 319,445.22 × 130,876.84
  4. Step 4: Simplify right side
    231,478.12x = 41,807,980,946.70
  5. Step 5: Solve for x
    x = 41,807,980,946.70/231,478.12
  6. Step 6: Final answer
    x = 180,613.10

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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.