Home / 231,320.36-319,222.68-129,349.52

Finding the Fourth Proportional to 231,320.36, 319,222.68 and 129,349.52

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Solution

The fourth proportional to 231,320.36, 319,222.68 and 129,349.52 is: 178,502.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,320.36 : 319,222.68 = 129,349.52 : x
  2. Step 2: Convert to fraction form
    231,320.36/319,222.68 = 129,349.52/x
  3. Step 3: Cross multiply
    231,320.36x = 319,222.68 × 129,349.52
  4. Step 4: Simplify right side
    231,320.36x = 41,291,300,431.11
  5. Step 5: Solve for x
    x = 41,291,300,431.11/231,320.36
  6. Step 6: Final answer
    x = 178,502.66

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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.