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Finding the Fourth Proportional to 620,138.60, 929,551.80 and 240,912.80

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Solution

The fourth proportional to 620,138.60, 929,551.80 and 240,912.80 is: 361,114.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,138.60 : 929,551.80 = 240,912.80 : x
  2. Step 2: Convert to fraction form
    620,138.60/929,551.80 = 240,912.80/x
  3. Step 3: Cross multiply
    620,138.60x = 929,551.80 × 240,912.80
  4. Step 4: Simplify right side
    620,138.60x = 223,940,926,883.04
  5. Step 5: Solve for x
    x = 223,940,926,883.04/620,138.60
  6. Step 6: Final answer
    x = 361,114.32

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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.