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Finding the Fourth Proportional to 352,517.20, 528,775.78 and 103,199.20

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Solution

The fourth proportional to 352,517.20, 528,775.78 and 103,199.20 is: 154,798.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,517.20 : 528,775.78 = 103,199.20 : x
  2. Step 2: Convert to fraction form
    352,517.20/528,775.78 = 103,199.20/x
  3. Step 3: Cross multiply
    352,517.20x = 528,775.78 × 103,199.20
  4. Step 4: Simplify right side
    352,517.20x = 54,569,237,475.38
  5. Step 5: Solve for x
    x = 54,569,237,475.38/352,517.20
  6. Step 6: Final answer
    x = 154,798.79

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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.