Home / 231,442.86-319,376.08-129,450.65

Finding the Fourth Proportional to 231,442.86, 319,376.08 and 129,450.65

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Solution

The fourth proportional to 231,442.86, 319,376.08 and 129,450.65 is: 178,633.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,442.86 : 319,376.08 = 129,450.65 : x
  2. Step 2: Convert to fraction form
    231,442.86/319,376.08 = 129,450.65/x
  3. Step 3: Cross multiply
    231,442.86x = 319,376.08 × 129,450.65
  4. Step 4: Simplify right side
    231,442.86x = 41,343,441,150.45
  5. Step 5: Solve for x
    x = 41,343,441,150.45/231,442.86
  6. Step 6: Final answer
    x = 178,633.47

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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.