Home / 347,870.20-521,829.60-137,480.80

Finding the Fourth Proportional to 347,870.20, 521,829.60 and 137,480.80

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Solution

The fourth proportional to 347,870.20, 521,829.60 and 137,480.80 is: 206,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,870.20 : 521,829.60 = 137,480.80 : x
  2. Step 2: Convert to fraction form
    347,870.20/521,829.60 = 137,480.80/x
  3. Step 3: Cross multiply
    347,870.20x = 521,829.60 × 137,480.80
  4. Step 4: Simplify right side
    347,870.20x = 71,741,550,871.68
  5. Step 5: Solve for x
    x = 71,741,550,871.68/347,870.20
  6. Step 6: Final answer
    x = 206,230.80

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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.