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Finding the Fourth Proportional to 262,238.40, 393,357.60 and 75,268.80

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Solution

The fourth proportional to 262,238.40, 393,357.60 and 75,268.80 is: 112,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,238.40 : 393,357.60 = 75,268.80 : x
  2. Step 2: Convert to fraction form
    262,238.40/393,357.60 = 75,268.80/x
  3. Step 3: Cross multiply
    262,238.40x = 393,357.60 × 75,268.80
  4. Step 4: Simplify right side
    262,238.40x = 29,607,554,522.88
  5. Step 5: Solve for x
    x = 29,607,554,522.88/262,238.40
  6. Step 6: Final answer
    x = 112,903.20

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1.5x scale

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.