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Finding the Fourth Proportional to 402,732.20, 604,098.30 and 192,780.20

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Solution

The fourth proportional to 402,732.20, 604,098.30 and 192,780.20 is: 289,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,732.20 : 604,098.30 = 192,780.20 : x
  2. Step 2: Convert to fraction form
    402,732.20/604,098.30 = 192,780.20/x
  3. Step 3: Cross multiply
    402,732.20x = 604,098.30 × 192,780.20
  4. Step 4: Simplify right side
    402,732.20x = 116,458,191,093.66
  5. Step 5: Solve for x
    x = 116,458,191,093.66/402,732.20
  6. Step 6: Final answer
    x = 289,170.30

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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.