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Finding the Fourth Proportional to 218,639.72, 327,959.64 and 168,792.58

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Solution

The fourth proportional to 218,639.72, 327,959.64 and 168,792.58 is: 253,188.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,639.72 : 327,959.64 = 168,792.58 : x
  2. Step 2: Convert to fraction form
    218,639.72/327,959.64 = 168,792.58/x
  3. Step 3: Cross multiply
    218,639.72x = 327,959.64 × 168,792.58
  4. Step 4: Simplify right side
    218,639.72x = 55,357,153,771.47
  5. Step 5: Solve for x
    x = 55,357,153,771.47/218,639.72
  6. Step 6: Final answer
    x = 253,188.92

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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.