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Finding the Fourth Proportional to 318,353.46, 477,493.74 and 118,680.36

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Solution

The fourth proportional to 318,353.46, 477,493.74 and 118,680.36 is: 178,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,353.46 : 477,493.74 = 118,680.36 : x
  2. Step 2: Convert to fraction form
    318,353.46/477,493.74 = 118,680.36/x
  3. Step 3: Cross multiply
    318,353.46x = 477,493.74 × 118,680.36
  4. Step 4: Simplify right side
    318,353.46x = 56,669,128,960.95
  5. Step 5: Solve for x
    x = 56,669,128,960.95/318,353.46
  6. Step 6: Final answer
    x = 178,006.95

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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.