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Finding the Fourth Proportional to 171,305.40, 256,958.10 and 145,061.40

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Solution

The fourth proportional to 171,305.40, 256,958.10 and 145,061.40 is: 217,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,305.40 : 256,958.10 = 145,061.40 : x
  2. Step 2: Convert to fraction form
    171,305.40/256,958.10 = 145,061.40/x
  3. Step 3: Cross multiply
    171,305.40x = 256,958.10 × 145,061.40
  4. Step 4: Simplify right side
    171,305.40x = 37,274,701,727.34
  5. Step 5: Solve for x
    x = 37,274,701,727.34/171,305.40
  6. Step 6: Final answer
    x = 217,592.10

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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.