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Finding the Fourth Proportional to 313,662.63, 470,494.33 and 85,960.13

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Solution

The fourth proportional to 313,662.63, 470,494.33 and 85,960.13 is: 128,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,662.63 : 470,494.33 = 85,960.13 : x
  2. Step 2: Convert to fraction form
    313,662.63/470,494.33 = 85,960.13/x
  3. Step 3: Cross multiply
    313,662.63x = 470,494.33 × 85,960.13
  4. Step 4: Simplify right side
    313,662.63x = 40,443,754,732.40
  5. Step 5: Solve for x
    x = 40,443,754,732.40/313,662.63
  6. Step 6: Final answer
    x = 128,940.30

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Double scale
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Similar ratio
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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.