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Finding the Fourth Proportional to 254,041.34, 381,062.69 and 85,679.94

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Solution

The fourth proportional to 254,041.34, 381,062.69 and 85,679.94 is: 128,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,041.34 : 381,062.69 = 85,679.94 : x
  2. Step 2: Convert to fraction form
    254,041.34/381,062.69 = 85,679.94/x
  3. Step 3: Cross multiply
    254,041.34x = 381,062.69 × 85,679.94
  4. Step 4: Simplify right side
    254,041.34x = 32,649,427,987.04
  5. Step 5: Solve for x
    x = 32,649,427,987.04/254,041.34
  6. Step 6: Final answer
    x = 128,520.14

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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.