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Finding the Fourth Proportional to 318,350.67, 477,424.50 and 105,078.97

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Solution

The fourth proportional to 318,350.67, 477,424.50 and 105,078.97 is: 157,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,350.67 : 477,424.50 = 105,078.97 : x
  2. Step 2: Convert to fraction form
    318,350.67/477,424.50 = 105,078.97/x
  3. Step 3: Cross multiply
    318,350.67x = 477,424.50 × 105,078.97
  4. Step 4: Simplify right side
    318,350.67x = 50,167,274,712.77
  5. Step 5: Solve for x
    x = 50,167,274,712.77/318,350.67
  6. Step 6: Final answer
    x = 157,584.95

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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.