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Finding the Fourth Proportional to 274,247.40, 411,401.34 and 87,215.16

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Solution

The fourth proportional to 274,247.40, 411,401.34 and 87,215.16 is: 130,832.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,247.40 : 411,401.34 = 87,215.16 : x
  2. Step 2: Convert to fraction form
    274,247.40/411,401.34 = 87,215.16/x
  3. Step 3: Cross multiply
    274,247.40x = 411,401.34 × 87,215.16
  4. Step 4: Simplify right side
    274,247.40x = 35,880,433,692.31
  5. Step 5: Solve for x
    x = 35,880,433,692.31/274,247.40
  6. Step 6: Final answer
    x = 130,832.36

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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.