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Finding the Fourth Proportional to 218,073.60, 326,585.52 and 147,739.68

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Solution

The fourth proportional to 218,073.60, 326,585.52 and 147,739.68 is: 221,253.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,073.60 : 326,585.52 = 147,739.68 : x
  2. Step 2: Convert to fraction form
    218,073.60/326,585.52 = 147,739.68/x
  3. Step 3: Cross multiply
    218,073.60x = 326,585.52 × 147,739.68
  4. Step 4: Simplify right side
    218,073.60x = 48,249,640,217.43
  5. Step 5: Solve for x
    x = 48,249,640,217.43/218,073.60
  6. Step 6: Final answer
    x = 221,253.93

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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.