Home / 318,488.20-477,732.33-81,830.87

Finding the Fourth Proportional to 318,488.20, 477,732.33 and 81,830.87

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Solution

The fourth proportional to 318,488.20, 477,732.33 and 81,830.87 is: 122,746.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,488.20 : 477,732.33 = 81,830.87 : x
  2. Step 2: Convert to fraction form
    318,488.20/477,732.33 = 81,830.87/x
  3. Step 3: Cross multiply
    318,488.20x = 477,732.33 × 81,830.87
  4. Step 4: Simplify right side
    318,488.20x = 39,093,252,191.03
  5. Step 5: Solve for x
    x = 39,093,252,191.03/318,488.20
  6. Step 6: Final answer
    x = 122,746.31

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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.