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Finding the Fourth Proportional to 313,635.17, 470,453.13 and 85,932.72

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Solution

The fourth proportional to 313,635.17, 470,453.13 and 85,932.72 is: 128,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,635.17 : 470,453.13 = 85,932.72 : x
  2. Step 2: Convert to fraction form
    313,635.17/470,453.13 = 85,932.72/x
  3. Step 3: Cross multiply
    313,635.17x = 470,453.13 × 85,932.72
  4. Step 4: Simplify right side
    313,635.17x = 40,427,317,093.41
  5. Step 5: Solve for x
    x = 40,427,317,093.41/313,635.17
  6. Step 6: Final answer
    x = 128,899.18

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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.