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Finding the Fourth Proportional to 254,017.22, 380,787.40 and 85,419.62

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Solution

The fourth proportional to 254,017.22, 380,787.40 and 85,419.62 is: 128,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,017.22 : 380,787.40 = 85,419.62 : x
  2. Step 2: Convert to fraction form
    254,017.22/380,787.40 = 85,419.62/x
  3. Step 3: Cross multiply
    254,017.22x = 380,787.40 × 85,419.62
  4. Step 4: Simplify right side
    254,017.22x = 32,526,715,008.79
  5. Step 5: Solve for x
    x = 32,526,715,008.79/254,017.22
  6. Step 6: Final answer
    x = 128,049.25

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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.