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Finding the Fourth Proportional to 252,000.40, 378,292.20 and 145,469.20

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Solution

The fourth proportional to 252,000.40, 378,292.20 and 145,469.20 is: 218,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,000.40 : 378,292.20 = 145,469.20 : x
  2. Step 2: Convert to fraction form
    252,000.40/378,292.20 = 145,469.20/x
  3. Step 3: Cross multiply
    252,000.40x = 378,292.20 × 145,469.20
  4. Step 4: Simplify right side
    252,000.40x = 55,029,863,700.24
  5. Step 5: Solve for x
    x = 55,029,863,700.24/252,000.40
  6. Step 6: Final answer
    x = 218,372.13

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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.