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Finding the Fourth Proportional to 171,002.60, 256,503.90 and 115,015.40

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Solution

The fourth proportional to 171,002.60, 256,503.90 and 115,015.40 is: 172,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,002.60 : 256,503.90 = 115,015.40 : x
  2. Step 2: Convert to fraction form
    171,002.60/256,503.90 = 115,015.40/x
  3. Step 3: Cross multiply
    171,002.60x = 256,503.90 × 115,015.40
  4. Step 4: Simplify right side
    171,002.60x = 29,501,898,660.06
  5. Step 5: Solve for x
    x = 29,501,898,660.06/171,002.60
  6. Step 6: Final answer
    x = 172,523.10

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1.5x scale

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.