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Finding the Fourth Proportional to 254,412.60, 381,618.90 and 76,901.10

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Solution

The fourth proportional to 254,412.60, 381,618.90 and 76,901.10 is: 115,351.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,412.60 : 381,618.90 = 76,901.10 : x
  2. Step 2: Convert to fraction form
    254,412.60/381,618.90 = 76,901.10/x
  3. Step 3: Cross multiply
    254,412.60x = 381,618.90 × 76,901.10
  4. Step 4: Simplify right side
    254,412.60x = 29,346,913,190.79
  5. Step 5: Solve for x
    x = 29,346,913,190.79/254,412.60
  6. Step 6: Final answer
    x = 115,351.65

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Similar ratio
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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.