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Finding the Fourth Proportional to 252,153.80, 378,230.70 and 141,331.40

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Solution

The fourth proportional to 252,153.80, 378,230.70 and 141,331.40 is: 211,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,153.80 : 378,230.70 = 141,331.40 : x
  2. Step 2: Convert to fraction form
    252,153.80/378,230.70 = 141,331.40/x
  3. Step 3: Cross multiply
    252,153.80x = 378,230.70 × 141,331.40
  4. Step 4: Simplify right side
    252,153.80x = 53,455,874,353.98
  5. Step 5: Solve for x
    x = 53,455,874,353.98/252,153.80
  6. Step 6: Final answer
    x = 211,997.10

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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.