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Finding the Fourth Proportional to 347,674.80, 521,512.20 and 137,204.40

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Solution

The fourth proportional to 347,674.80, 521,512.20 and 137,204.40 is: 205,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,674.80 : 521,512.20 = 137,204.40 : x
  2. Step 2: Convert to fraction form
    347,674.80/521,512.20 = 137,204.40/x
  3. Step 3: Cross multiply
    347,674.80x = 521,512.20 × 137,204.40
  4. Step 4: Simplify right side
    347,674.80x = 71,553,768,493.68
  5. Step 5: Solve for x
    x = 71,553,768,493.68/347,674.80
  6. Step 6: Final answer
    x = 205,806.60

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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.