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Finding the Fourth Proportional to 268,302.80, 402,454.20 and 201,380.60

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Solution

The fourth proportional to 268,302.80, 402,454.20 and 201,380.60 is: 302,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,302.80 : 402,454.20 = 201,380.60 : x
  2. Step 2: Convert to fraction form
    268,302.80/402,454.20 = 201,380.60/x
  3. Step 3: Cross multiply
    268,302.80x = 402,454.20 × 201,380.60
  4. Step 4: Simplify right side
    268,302.80x = 81,046,468,268.52
  5. Step 5: Solve for x
    x = 81,046,468,268.52/268,302.80
  6. Step 6: Final answer
    x = 302,070.90

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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.