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Finding the Fourth Proportional to 351,648.80, 527,473.20 and 115,015.40

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Solution

The fourth proportional to 351,648.80, 527,473.20 and 115,015.40 is: 172,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,648.80 : 527,473.20 = 115,015.40 : x
  2. Step 2: Convert to fraction form
    351,648.80/527,473.20 = 115,015.40/x
  3. Step 3: Cross multiply
    351,648.80x = 527,473.20 × 115,015.40
  4. Step 4: Simplify right side
    351,648.80x = 60,667,541,087.28
  5. Step 5: Solve for x
    x = 60,667,541,087.28/351,648.80
  6. Step 6: Final answer
    x = 172,523.10

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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.