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Finding the Fourth Proportional to 171,264.60, 256,896.90 and 156,749.40

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Solution

The fourth proportional to 171,264.60, 256,896.90 and 156,749.40 is: 235,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,264.60 : 256,896.90 = 156,749.40 : x
  2. Step 2: Convert to fraction form
    171,264.60/256,896.90 = 156,749.40/x
  3. Step 3: Cross multiply
    171,264.60x = 256,896.90 × 156,749.40
  4. Step 4: Simplify right side
    171,264.60x = 40,268,434,936.86
  5. Step 5: Solve for x
    x = 40,268,434,936.86/171,264.60
  6. Step 6: Final answer
    x = 235,124.10

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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.