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Finding the Fourth Proportional to 252,000.30, 378,000.45 and 141,177.90

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Solution

The fourth proportional to 252,000.30, 378,000.45 and 141,177.90 is: 211,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,000.30 : 378,000.45 = 141,177.90 : x
  2. Step 2: Convert to fraction form
    252,000.30/378,000.45 = 141,177.90/x
  3. Step 3: Cross multiply
    252,000.30x = 378,000.45 × 141,177.90
  4. Step 4: Simplify right side
    252,000.30x = 53,365,309,730.06
  5. Step 5: Solve for x
    x = 53,365,309,730.06/252,000.30
  6. Step 6: Final answer
    x = 211,766.85

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1.5x scale

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.