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Finding the Fourth Proportional to 252,762.76, 378,877.74 and 84,238.12

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Solution

The fourth proportional to 252,762.76, 378,877.74 and 84,238.12 is: 126,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,762.76 : 378,877.74 = 84,238.12 : x
  2. Step 2: Convert to fraction form
    252,762.76/378,877.74 = 84,238.12/x
  3. Step 3: Cross multiply
    252,762.76x = 378,877.74 × 84,238.12
  4. Step 4: Simplify right side
    252,762.76x = 31,915,948,527.45
  5. Step 5: Solve for x
    x = 31,915,948,527.45/252,762.76
  6. Step 6: Final answer
    x = 126,268.40

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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.