Home / 231,386.23-319,312.06-129,411.28

Finding the Fourth Proportional to 231,386.23, 319,312.06 and 129,411.28

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Solution

The fourth proportional to 231,386.23, 319,312.06 and 129,411.28 is: 178,587.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,386.23 : 319,312.06 = 129,411.28 : x
  2. Step 2: Convert to fraction form
    231,386.23/319,312.06 = 129,411.28/x
  3. Step 3: Cross multiply
    231,386.23x = 319,312.06 × 129,411.28
  4. Step 4: Simplify right side
    231,386.23x = 41,322,582,404.04
  5. Step 5: Solve for x
    x = 41,322,582,404.04/231,386.23
  6. Step 6: Final answer
    x = 178,587.04

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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.