Home / 283,690.12-391,487.70-156,377.56

Finding the Fourth Proportional to 283,690.12, 391,487.70 and 156,377.56

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Solution

The fourth proportional to 283,690.12, 391,487.70 and 156,377.56 is: 215,798.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,690.12 : 391,487.70 = 156,377.56 : x
  2. Step 2: Convert to fraction form
    283,690.12/391,487.70 = 156,377.56/x
  3. Step 3: Cross multiply
    283,690.12x = 391,487.70 × 156,377.56
  4. Step 4: Simplify right side
    283,690.12x = 61,219,891,296.01
  5. Step 5: Solve for x
    x = 61,219,891,296.01/283,690.12
  6. Step 6: Final answer
    x = 215,798.46

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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.