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Finding the Fourth Proportional to 283,370.46, 391,049.28 and 156,045

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Solution

The fourth proportional to 283,370.46, 391,049.28 and 156,045 is: 215,341.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,370.46 : 391,049.28 = 156,045 : x
  2. Step 2: Convert to fraction form
    283,370.46/391,049.28 = 156,045/x
  3. Step 3: Cross multiply
    283,370.46x = 391,049.28 × 156,045
  4. Step 4: Simplify right side
    283,370.46x = 61,021,284,897.60
  5. Step 5: Solve for x
    x = 61,021,284,897.60/283,370.46
  6. Step 6: Final answer
    x = 215,341.02

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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.