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Finding the Fourth Proportional to 262,528.40, 393,792.60 and 75,539.90

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Solution

The fourth proportional to 262,528.40, 393,792.60 and 75,539.90 is: 113,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,528.40 : 393,792.60 = 75,539.90 : x
  2. Step 2: Convert to fraction form
    262,528.40/393,792.60 = 75,539.90/x
  3. Step 3: Cross multiply
    262,528.40x = 393,792.60 × 75,539.90
  4. Step 4: Simplify right side
    262,528.40x = 29,747,053,624.74
  5. Step 5: Solve for x
    x = 29,747,053,624.74/262,528.40
  6. Step 6: Final answer
    x = 113,309.85

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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.