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Finding the Fourth Proportional to 231,476.03, 319,449.32 and 129,495.40

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Solution

The fourth proportional to 231,476.03, 319,449.32 and 129,495.40 is: 178,710.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,476.03 : 319,449.32 = 129,495.40 : x
  2. Step 2: Convert to fraction form
    231,476.03/319,449.32 = 129,495.40/x
  3. Step 3: Cross multiply
    231,476.03x = 319,449.32 × 129,495.40
  4. Step 4: Simplify right side
    231,476.03x = 41,367,217,473.13
  5. Step 5: Solve for x
    x = 41,367,217,473.13/231,476.03
  6. Step 6: Final answer
    x = 178,710.59

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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.