Home / 231,553.64-319,557.48-129,578.21

Finding the Fourth Proportional to 231,553.64, 319,557.48 and 129,578.21

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Solution

The fourth proportional to 231,553.64, 319,557.48 and 129,578.21 is: 178,825.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,553.64 : 319,557.48 = 129,578.21 : x
  2. Step 2: Convert to fraction form
    231,553.64/319,557.48 = 129,578.21/x
  3. Step 3: Cross multiply
    231,553.64x = 319,557.48 × 129,578.21
  4. Step 4: Simplify right side
    231,553.64x = 41,407,686,250.51
  5. Step 5: Solve for x
    x = 41,407,686,250.51/231,553.64
  6. Step 6: Final answer
    x = 178,825.46

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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.