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Finding the Fourth Proportional to 318,315.75, 477,372.18 and 105,043.92

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Solution

The fourth proportional to 318,315.75, 477,372.18 and 105,043.92 is: 157,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,315.75 : 477,372.18 = 105,043.92 : x
  2. Step 2: Convert to fraction form
    318,315.75/477,372.18 = 105,043.92/x
  3. Step 3: Cross multiply
    318,315.75x = 477,372.18 × 105,043.92
  4. Step 4: Simplify right side
    318,315.75x = 50,145,045,086.15
  5. Step 5: Solve for x
    x = 50,145,045,086.15/318,315.75
  6. Step 6: Final answer
    x = 157,532.40

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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.