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Finding the Fourth Proportional to 171,065.20, 256,306.20 and 145,987.60

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Solution

The fourth proportional to 171,065.20, 256,306.20 and 145,987.60 is: 218,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,065.20 : 256,306.20 = 145,987.60 : x
  2. Step 2: Convert to fraction form
    171,065.20/256,306.20 = 145,987.60/x
  3. Step 3: Cross multiply
    171,065.20x = 256,306.20 × 145,987.60
  4. Step 4: Simplify right side
    171,065.20x = 37,417,527,003.12
  5. Step 5: Solve for x
    x = 37,417,527,003.12/171,065.20
  6. Step 6: Final answer
    x = 218,732.55

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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.