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Finding the Fourth Proportional to 254,001.05, 380,734.85 and 85,462.86

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Solution

The fourth proportional to 254,001.05, 380,734.85 and 85,462.86 is: 128,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,001.05 : 380,734.85 = 85,462.86 : x
  2. Step 2: Convert to fraction form
    254,001.05/380,734.85 = 85,462.86/x
  3. Step 3: Cross multiply
    254,001.05x = 380,734.85 × 85,462.86
  4. Step 4: Simplify right side
    254,001.05x = 32,538,688,755.36
  5. Step 5: Solve for x
    x = 32,538,688,755.36/254,001.05
  6. Step 6: Final answer
    x = 128,104.55

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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.