Home / 231,637.91-319,645.49-129,646.22

Finding the Fourth Proportional to 231,637.91, 319,645.49 and 129,646.22

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Solution

The fourth proportional to 231,637.91, 319,645.49 and 129,646.22 is: 178,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,637.91 : 319,645.49 = 129,646.22 : x
  2. Step 2: Convert to fraction form
    231,637.91/319,645.49 = 129,646.22/x
  3. Step 3: Cross multiply
    231,637.91x = 319,645.49 × 129,646.22
  4. Step 4: Simplify right side
    231,637.91x = 41,440,827,272.09
  5. Step 5: Solve for x
    x = 41,440,827,272.09/231,637.91
  6. Step 6: Final answer
    x = 178,903.48

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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.