Home / 231,395.94-319,320.01-129,421.59

Finding the Fourth Proportional to 231,395.94, 319,320.01 and 129,421.59

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Solution

The fourth proportional to 231,395.94, 319,320.01 and 129,421.59 is: 178,598.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,395.94 : 319,320.01 = 129,421.59 : x
  2. Step 2: Convert to fraction form
    231,395.94/319,320.01 = 129,421.59/x
  3. Step 3: Cross multiply
    231,395.94x = 319,320.01 × 129,421.59
  4. Step 4: Simplify right side
    231,395.94x = 41,326,902,765.91
  5. Step 5: Solve for x
    x = 41,326,902,765.91/231,395.94
  6. Step 6: Final answer
    x = 178,598.22

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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.