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Finding the Fourth Proportional to 318,073.44, 477,099.23 and 81,418.17

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Solution

The fourth proportional to 318,073.44, 477,099.23 and 81,418.17 is: 122,124.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,073.44 : 477,099.23 = 81,418.17 : x
  2. Step 2: Convert to fraction form
    318,073.44/477,099.23 = 81,418.17/x
  3. Step 3: Cross multiply
    318,073.44x = 477,099.23 × 81,418.17
  4. Step 4: Simplify right side
    318,073.44x = 38,844,545,807.92
  5. Step 5: Solve for x
    x = 38,844,545,807.92/318,073.44
  6. Step 6: Final answer
    x = 122,124.46

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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.