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Finding the Fourth Proportional to 326,122.60, 488,527.80 and 185,717.20

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Solution

The fourth proportional to 326,122.60, 488,527.80 and 185,717.20 is: 278,202.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,122.60 : 488,527.80 = 185,717.20 : x
  2. Step 2: Convert to fraction form
    326,122.60/488,527.80 = 185,717.20/x
  3. Step 3: Cross multiply
    326,122.60x = 488,527.80 × 185,717.20
  4. Step 4: Simplify right side
    326,122.60x = 90,728,015,138.16
  5. Step 5: Solve for x
    x = 90,728,015,138.16/326,122.60
  6. Step 6: Final answer
    x = 278,202.17

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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.