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Finding the Fourth Proportional to 402,278.90, 603,758.55 and 165,791.30

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Solution

The fourth proportional to 402,278.90, 603,758.55 and 165,791.30 is: 248,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,278.90 : 603,758.55 = 165,791.30 : x
  2. Step 2: Convert to fraction form
    402,278.90/603,758.55 = 165,791.30/x
  3. Step 3: Cross multiply
    402,278.90x = 603,758.55 × 165,791.30
  4. Step 4: Simplify right side
    402,278.90x = 100,097,914,890.62
  5. Step 5: Solve for x
    x = 100,097,914,890.62/402,278.90
  6. Step 6: Final answer
    x = 248,827.16

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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.