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Finding the Fourth Proportional to 318,328.82, 439,294 and 175,099.76

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Solution

The fourth proportional to 318,328.82, 439,294 and 175,099.76 is: 241,637.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,328.82 : 439,294 = 175,099.76 : x
  2. Step 2: Convert to fraction form
    318,328.82/439,294 = 175,099.76/x
  3. Step 3: Cross multiply
    318,328.82x = 439,294 × 175,099.76
  4. Step 4: Simplify right side
    318,328.82x = 76,920,273,969.44
  5. Step 5: Solve for x
    x = 76,920,273,969.44/318,328.82
  6. Step 6: Final answer
    x = 241,637.79

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1.5x scale

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.