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Finding the Fourth Proportional to 321,350.54, 443,490.28 and 178,155.50

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Solution

The fourth proportional to 321,350.54, 443,490.28 and 178,155.50 is: 245,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,350.54 : 443,490.28 = 178,155.50 : x
  2. Step 2: Convert to fraction form
    321,350.54/443,490.28 = 178,155.50/x
  3. Step 3: Cross multiply
    321,350.54x = 443,490.28 × 178,155.50
  4. Step 4: Simplify right side
    321,350.54x = 79,010,229,915.70
  5. Step 5: Solve for x
    x = 79,010,229,915.70/321,350.54
  6. Step 6: Final answer
    x = 245,869.30

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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.