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Finding the Fourth Proportional to 252,563.80, 378,384.90 and 205,562.20

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Solution

The fourth proportional to 252,563.80, 378,384.90 and 205,562.20 is: 307,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,563.80 : 378,384.90 = 205,562.20 : x
  2. Step 2: Convert to fraction form
    252,563.80/378,384.90 = 205,562.20/x
  3. Step 3: Cross multiply
    252,563.80x = 378,384.90 × 205,562.20
  4. Step 4: Simplify right side
    252,563.80x = 77,781,632,490.78
  5. Step 5: Solve for x
    x = 77,781,632,490.78/252,563.80
  6. Step 6: Final answer
    x = 307,968.25

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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.