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Finding the Fourth Proportional to 402,853.20, 603,550.80 and 192,026.40

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Solution

The fourth proportional to 402,853.20, 603,550.80 and 192,026.40 is: 287,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,853.20 : 603,550.80 = 192,026.40 : x
  2. Step 2: Convert to fraction form
    402,853.20/603,550.80 = 192,026.40/x
  3. Step 3: Cross multiply
    402,853.20x = 603,550.80 × 192,026.40
  4. Step 4: Simplify right side
    402,853.20x = 115,897,687,341.12
  5. Step 5: Solve for x
    x = 115,897,687,341.12/402,853.20
  6. Step 6: Final answer
    x = 287,692.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.