Home / 231,426.86-319,354.04-129,434.67

Finding the Fourth Proportional to 231,426.86, 319,354.04 and 129,434.67

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Solution

The fourth proportional to 231,426.86, 319,354.04 and 129,434.67 is: 178,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,426.86 : 319,354.04 = 129,434.67 : x
  2. Step 2: Convert to fraction form
    231,426.86/319,354.04 = 129,434.67/x
  3. Step 3: Cross multiply
    231,426.86x = 319,354.04 × 129,434.67
  4. Step 4: Simplify right side
    231,426.86x = 41,335,484,780.57
  5. Step 5: Solve for x
    x = 41,335,484,780.57/231,426.86
  6. Step 6: Final answer
    x = 178,611.44

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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.