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Finding the Fourth Proportional to 318,363.50, 439,336.92 and 175,115

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Solution

The fourth proportional to 318,363.50, 439,336.92 and 175,115 is: 241,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,363.50 : 439,336.92 = 175,115 : x
  2. Step 2: Convert to fraction form
    318,363.50/439,336.92 = 175,115/x
  3. Step 3: Cross multiply
    318,363.50x = 439,336.92 × 175,115
  4. Step 4: Simplify right side
    318,363.50x = 76,934,484,745.80
  5. Step 5: Solve for x
    x = 76,934,484,745.80/318,363.50
  6. Step 6: Final answer
    x = 241,656.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.