Home / 347,718.20-521,601.60-137,328.80

Finding the Fourth Proportional to 347,718.20, 521,601.60 and 137,328.80

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Solution

The fourth proportional to 347,718.20, 521,601.60 and 137,328.80 is: 206,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,718.20 : 521,601.60 = 137,328.80 : x
  2. Step 2: Convert to fraction form
    347,718.20/521,601.60 = 137,328.80/x
  3. Step 3: Cross multiply
    347,718.20x = 521,601.60 × 137,328.80
  4. Step 4: Simplify right side
    347,718.20x = 71,630,921,806.08
  5. Step 5: Solve for x
    x = 71,630,921,806.08/347,718.20
  6. Step 6: Final answer
    x = 206,002.80

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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.