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Finding the Fourth Proportional to 256,458.80, 384,686.04 and 69,469.04

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Solution

The fourth proportional to 256,458.80, 384,686.04 and 69,469.04 is: 104,202.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,458.80 : 384,686.04 = 69,469.04 : x
  2. Step 2: Convert to fraction form
    256,458.80/384,686.04 = 69,469.04/x
  3. Step 3: Cross multiply
    256,458.80x = 384,686.04 × 69,469.04
  4. Step 4: Simplify right side
    256,458.80x = 26,723,769,900.20
  5. Step 5: Solve for x
    x = 26,723,769,900.20/256,458.80
  6. Step 6: Final answer
    x = 104,202.97

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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.