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Finding the Fourth Proportional to 171,983.40, 257,456.70 and 151,247.40

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Solution

The fourth proportional to 171,983.40, 257,456.70 and 151,247.40 is: 226,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,983.40 : 257,456.70 = 151,247.40 : x
  2. Step 2: Convert to fraction form
    171,983.40/257,456.70 = 151,247.40/x
  3. Step 3: Cross multiply
    171,983.40x = 257,456.70 × 151,247.40
  4. Step 4: Simplify right side
    171,983.40x = 38,939,656,487.58
  5. Step 5: Solve for x
    x = 38,939,656,487.58/171,983.40
  6. Step 6: Final answer
    x = 226,415.20

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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.