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Finding the Fourth Proportional to 254,024.66, 381,051.88 and 85,530.88

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Solution

The fourth proportional to 254,024.66, 381,051.88 and 85,530.88 is: 128,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,024.66 : 381,051.88 = 85,530.88 : x
  2. Step 2: Convert to fraction form
    254,024.66/381,051.88 = 85,530.88/x
  3. Step 3: Cross multiply
    254,024.66x = 381,051.88 × 85,530.88
  4. Step 4: Simplify right side
    254,024.66x = 32,591,702,622.05
  5. Step 5: Solve for x
    x = 32,591,702,622.05/254,024.66
  6. Step 6: Final answer
    x = 128,301.33

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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.