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Finding the Fourth Proportional to 275,645.80, 413,517.30 and 98,255.80

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Solution

The fourth proportional to 275,645.80, 413,517.30 and 98,255.80 is: 147,401.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,645.80 : 413,517.30 = 98,255.80 : x
  2. Step 2: Convert to fraction form
    275,645.80/413,517.30 = 98,255.80/x
  3. Step 3: Cross multiply
    275,645.80x = 413,517.30 × 98,255.80
  4. Step 4: Simplify right side
    275,645.80x = 40,630,473,125.34
  5. Step 5: Solve for x
    x = 40,630,473,125.34/275,645.80
  6. Step 6: Final answer
    x = 147,401.02

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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.