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Finding the Fourth Proportional to 170,871.30, 256,566.15 and 131,472.90

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Solution

The fourth proportional to 170,871.30, 256,566.15 and 131,472.90 is: 197,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,871.30 : 256,566.15 = 131,472.90 : x
  2. Step 2: Convert to fraction form
    170,871.30/256,566.15 = 131,472.90/x
  3. Step 3: Cross multiply
    170,871.30x = 256,566.15 × 131,472.90
  4. Step 4: Simplify right side
    170,871.30x = 33,731,495,782.34
  5. Step 5: Solve for x
    x = 33,731,495,782.34/170,871.30
  6. Step 6: Final answer
    x = 197,408.79

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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.