Home / 231,313.07-319,197.21-129,346.93

Finding the Fourth Proportional to 231,313.07, 319,197.21 and 129,346.93

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Solution

The fourth proportional to 231,313.07, 319,197.21 and 129,346.93 is: 178,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,313.07 : 319,197.21 = 129,346.93 : x
  2. Step 2: Convert to fraction form
    231,313.07/319,197.21 = 129,346.93/x
  3. Step 3: Cross multiply
    231,313.07x = 319,197.21 × 129,346.93
  4. Step 4: Simplify right side
    231,313.07x = 41,287,177,296.53
  5. Step 5: Solve for x
    x = 41,287,177,296.53/231,313.07
  6. Step 6: Final answer
    x = 178,490.47

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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.