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Finding the Fourth Proportional to 393,091.80, 588,276.90 and 235,433.40

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Solution

The fourth proportional to 393,091.80, 588,276.90 and 235,433.40 is: 352,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,091.80 : 588,276.90 = 235,433.40 : x
  2. Step 2: Convert to fraction form
    393,091.80/588,276.90 = 235,433.40/x
  3. Step 3: Cross multiply
    393,091.80x = 588,276.90 × 235,433.40
  4. Step 4: Simplify right side
    393,091.80x = 138,500,030,708.46
  5. Step 5: Solve for x
    x = 138,500,030,708.46/393,091.80
  6. Step 6: Final answer
    x = 352,335.08

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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.