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Finding the Fourth Proportional to 310,207.68, 428,086.80 and 174,241.92

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Solution

The fourth proportional to 310,207.68, 428,086.80 and 174,241.92 is: 240,453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,207.68 : 428,086.80 = 174,241.92 : x
  2. Step 2: Convert to fraction form
    310,207.68/428,086.80 = 174,241.92/x
  3. Step 3: Cross multiply
    310,207.68x = 428,086.80 × 174,241.92
  4. Step 4: Simplify right side
    310,207.68x = 74,590,665,958.66
  5. Step 5: Solve for x
    x = 74,590,665,958.66/310,207.68
  6. Step 6: Final answer
    x = 240,453.96

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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.