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Finding the Fourth Proportional to 383,282.50, 528,646.50 and 281,273.50

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Solution

The fourth proportional to 383,282.50, 528,646.50 and 281,273.50 is: 387,949.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,282.50 : 528,646.50 = 281,273.50 : x
  2. Step 2: Convert to fraction form
    383,282.50/528,646.50 = 281,273.50/x
  3. Step 3: Cross multiply
    383,282.50x = 528,646.50 × 281,273.50
  4. Step 4: Simplify right side
    383,282.50x = 148,694,251,317.75
  5. Step 5: Solve for x
    x = 148,694,251,317.75/383,282.50
  6. Step 6: Final answer
    x = 387,949.49

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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.