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Finding the Fourth Proportional to 171,471.40, 257,207.10 and 159,807.40

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Solution

The fourth proportional to 171,471.40, 257,207.10 and 159,807.40 is: 239,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,471.40 : 257,207.10 = 159,807.40 : x
  2. Step 2: Convert to fraction form
    171,471.40/257,207.10 = 159,807.40/x
  3. Step 3: Cross multiply
    171,471.40x = 257,207.10 × 159,807.40
  4. Step 4: Simplify right side
    171,471.40x = 41,103,597,912.54
  5. Step 5: Solve for x
    x = 41,103,597,912.54/171,471.40
  6. Step 6: Final answer
    x = 239,711.10

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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.