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Finding the Fourth Proportional to 283,595.16, 391,369.67 and 156,278.96

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Solution

The fourth proportional to 283,595.16, 391,369.67 and 156,278.96 is: 215,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,595.16 : 391,369.67 = 156,278.96 : x
  2. Step 2: Convert to fraction form
    283,595.16/391,369.67 = 156,278.96/x
  3. Step 3: Cross multiply
    283,595.16x = 391,369.67 × 156,278.96
  4. Step 4: Simplify right side
    283,595.16x = 61,162,842,264.90
  5. Step 5: Solve for x
    x = 61,162,842,264.90/283,595.16
  6. Step 6: Final answer
    x = 215,669.56

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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.