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Finding the Fourth Proportional to 517,306.75, 775,992.93 and 162,334.78

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Solution

The fourth proportional to 517,306.75, 775,992.93 and 162,334.78 is: 243,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,306.75 : 775,992.93 = 162,334.78 : x
  2. Step 2: Convert to fraction form
    517,306.75/775,992.93 = 162,334.78/x
  3. Step 3: Cross multiply
    517,306.75x = 775,992.93 × 162,334.78
  4. Step 4: Simplify right side
    517,306.75x = 125,970,641,573.11
  5. Step 5: Solve for x
    x = 125,970,641,573.11/517,306.75
  6. Step 6: Final answer
    x = 243,512.46

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Double scale
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Similar ratio
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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.