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Finding the Fourth Proportional to 310,211.68, 428,092.32 and 174,245.92

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Solution

The fourth proportional to 310,211.68, 428,092.32 and 174,245.92 is: 240,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,211.68 : 428,092.32 = 174,245.92 : x
  2. Step 2: Convert to fraction form
    310,211.68/428,092.32 = 174,245.92/x
  3. Step 3: Cross multiply
    310,211.68x = 428,092.32 × 174,245.92
  4. Step 4: Simplify right side
    310,211.68x = 74,593,340,143.33
  5. Step 5: Solve for x
    x = 74,593,340,143.33/310,211.68
  6. Step 6: Final answer
    x = 240,459.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.