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Finding the Fourth Proportional to 318,451.72, 477,315.44 and 166,414.38

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Solution

The fourth proportional to 318,451.72, 477,315.44 and 166,414.38 is: 249,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,451.72 : 477,315.44 = 166,414.38 : x
  2. Step 2: Convert to fraction form
    318,451.72/477,315.44 = 166,414.38/x
  3. Step 3: Cross multiply
    318,451.72x = 477,315.44 × 166,414.38
  4. Step 4: Simplify right side
    318,451.72x = 79,432,154,582.67
  5. Step 5: Solve for x
    x = 79,432,154,582.67/318,451.72
  6. Step 6: Final answer
    x = 249,432.33

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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.