Home / 283,721.46-391,531.38-156,394.32

Finding the Fourth Proportional to 283,721.46, 391,531.38 and 156,394.32

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Solution

The fourth proportional to 283,721.46, 391,531.38 and 156,394.32 is: 215,821.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,721.46 : 391,531.38 = 156,394.32 : x
  2. Step 2: Convert to fraction form
    283,721.46/391,531.38 = 156,394.32/x
  3. Step 3: Cross multiply
    283,721.46x = 391,531.38 × 156,394.32
  4. Step 4: Simplify right side
    283,721.46x = 61,233,283,933.76
  5. Step 5: Solve for x
    x = 61,233,283,933.76/283,721.46
  6. Step 6: Final answer
    x = 215,821.83

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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.