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Finding the Fourth Proportional to 368,458.10, 552,687.15 and 131,819.30

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Solution

The fourth proportional to 368,458.10, 552,687.15 and 131,819.30 is: 197,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,458.10 : 552,687.15 = 131,819.30 : x
  2. Step 2: Convert to fraction form
    368,458.10/552,687.15 = 131,819.30/x
  3. Step 3: Cross multiply
    368,458.10x = 552,687.15 × 131,819.30
  4. Step 4: Simplify right side
    368,458.10x = 72,854,833,232.00
  5. Step 5: Solve for x
    x = 72,854,833,232.00/368,458.10
  6. Step 6: Final answer
    x = 197,728.95

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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.