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Finding the Fourth Proportional to 168,405.30, 252,437.01 and 143,826.15

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Solution

The fourth proportional to 168,405.30, 252,437.01 and 143,826.15 is: 215,593.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,405.30 : 252,437.01 = 143,826.15 : x
  2. Step 2: Convert to fraction form
    168,405.30/252,437.01 = 143,826.15/x
  3. Step 3: Cross multiply
    168,405.30x = 252,437.01 × 143,826.15
  4. Step 4: Simplify right side
    168,405.30x = 36,307,043,265.81
  5. Step 5: Solve for x
    x = 36,307,043,265.81/168,405.30
  6. Step 6: Final answer
    x = 215,593.23

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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.