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Finding the Fourth Proportional to 283,692.50, 391,490.98 and 156,379.94

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Solution

The fourth proportional to 283,692.50, 391,490.98 and 156,379.94 is: 215,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,692.50 : 391,490.98 = 156,379.94 : x
  2. Step 2: Convert to fraction form
    283,692.50/391,490.98 = 156,379.94/x
  3. Step 3: Cross multiply
    283,692.50x = 391,490.98 × 156,379.94
  4. Step 4: Simplify right side
    283,692.50x = 61,221,333,614.54
  5. Step 5: Solve for x
    x = 61,221,333,614.54/283,692.50
  6. Step 6: Final answer
    x = 215,801.74

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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.