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Finding the Fourth Proportional to 171,332.20, 256,998.30 and 154,419.40

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Solution

The fourth proportional to 171,332.20, 256,998.30 and 154,419.40 is: 231,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,332.20 : 256,998.30 = 154,419.40 : x
  2. Step 2: Convert to fraction form
    171,332.20/256,998.30 = 154,419.40/x
  3. Step 3: Cross multiply
    171,332.20x = 256,998.30 × 154,419.40
  4. Step 4: Simplify right side
    171,332.20x = 39,685,523,287.02
  5. Step 5: Solve for x
    x = 39,685,523,287.02/171,332.20
  6. Step 6: Final answer
    x = 231,629.10

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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.