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Finding the Fourth Proportional to 313,682.16, 470,522.29 and 89,042.78

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Solution

The fourth proportional to 313,682.16, 470,522.29 and 89,042.78 is: 133,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,682.16 : 470,522.29 = 89,042.78 : x
  2. Step 2: Convert to fraction form
    313,682.16/470,522.29 = 89,042.78/x
  3. Step 3: Cross multiply
    313,682.16x = 470,522.29 × 89,042.78
  4. Step 4: Simplify right side
    313,682.16x = 41,896,612,753.57
  5. Step 5: Solve for x
    x = 41,896,612,753.57/313,682.16
  6. Step 6: Final answer
    x = 133,563.90

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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.