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Finding the Fourth Proportional to 254,490.30, 381,723.30 and 85,994.10

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Solution

The fourth proportional to 254,490.30, 381,723.30 and 85,994.10 is: 128,987.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,490.30 : 381,723.30 = 85,994.10 : x
  2. Step 2: Convert to fraction form
    254,490.30/381,723.30 = 85,994.10/x
  3. Step 3: Cross multiply
    254,490.30x = 381,723.30 × 85,994.10
  4. Step 4: Simplify right side
    254,490.30x = 32,825,951,632.53
  5. Step 5: Solve for x
    x = 32,825,951,632.53/254,490.30
  6. Step 6: Final answer
    x = 128,987.04

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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.