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Finding the Fourth Proportional to 283,603.62, 391,375.62 and 156,283.77

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Solution

The fourth proportional to 283,603.62, 391,375.62 and 156,283.77 is: 215,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,603.62 : 391,375.62 = 156,283.77 : x
  2. Step 2: Convert to fraction form
    283,603.62/391,375.62 = 156,283.77/x
  3. Step 3: Cross multiply
    283,603.62x = 391,375.62 × 156,283.77
  4. Step 4: Simplify right side
    283,603.62x = 61,165,657,379.69
  5. Step 5: Solve for x
    x = 61,165,657,379.69/283,603.62
  6. Step 6: Final answer
    x = 215,673.05

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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.