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Finding the Fourth Proportional to 326,107.55, 488,932.16 and 143,651.77

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Solution

The fourth proportional to 326,107.55, 488,932.16 and 143,651.77 is: 215,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,107.55 : 488,932.16 = 143,651.77 : x
  2. Step 2: Convert to fraction form
    326,107.55/488,932.16 = 143,651.77/x
  3. Step 3: Cross multiply
    326,107.55x = 488,932.16 × 143,651.77
  4. Step 4: Simplify right side
    326,107.55x = 70,235,968,253.33
  5. Step 5: Solve for x
    x = 70,235,968,253.33/326,107.55
  6. Step 6: Final answer
    x = 215,376.70

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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.