Home / 231,348.30-319,190.67-135,800.70

Finding the Fourth Proportional to 231,348.30, 319,190.67 and 135,800.70

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Solution

The fourth proportional to 231,348.30, 319,190.67 and 135,800.70 is: 187,363.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,348.30 : 319,190.67 = 135,800.70 : x
  2. Step 2: Convert to fraction form
    231,348.30/319,190.67 = 135,800.70/x
  3. Step 3: Cross multiply
    231,348.30x = 319,190.67 × 135,800.70
  4. Step 4: Simplify right side
    231,348.30x = 43,346,316,419.47
  5. Step 5: Solve for x
    x = 43,346,316,419.47/231,348.30
  6. Step 6: Final answer
    x = 187,363.89

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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.