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Finding the Fourth Proportional to 318,026.38, 477,037.13 and 81,368.68

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Solution

The fourth proportional to 318,026.38, 477,037.13 and 81,368.68 is: 122,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,026.38 : 477,037.13 = 81,368.68 : x
  2. Step 2: Convert to fraction form
    318,026.38/477,037.13 = 81,368.68/x
  3. Step 3: Cross multiply
    318,026.38x = 477,037.13 × 81,368.68
  4. Step 4: Simplify right side
    318,026.38x = 38,815,880,589.92
  5. Step 5: Solve for x
    x = 38,815,880,589.92/318,026.38
  6. Step 6: Final answer
    x = 122,052.39

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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.