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Finding the Fourth Proportional to 274,265.40, 411,398.10 and 168,742.20

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Solution

The fourth proportional to 274,265.40, 411,398.10 and 168,742.20 is: 253,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,265.40 : 411,398.10 = 168,742.20 : x
  2. Step 2: Convert to fraction form
    274,265.40/411,398.10 = 168,742.20/x
  3. Step 3: Cross multiply
    274,265.40x = 411,398.10 × 168,742.20
  4. Step 4: Simplify right side
    274,265.40x = 69,420,220,469.82
  5. Step 5: Solve for x
    x = 69,420,220,469.82/274,265.40
  6. Step 6: Final answer
    x = 253,113.30

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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.