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Finding the Fourth Proportional to 348,375.20, 521,542.20 and 260,020.40

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Solution

The fourth proportional to 348,375.20, 521,542.20 and 260,020.40 is: 389,268.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,375.20 : 521,542.20 = 260,020.40 : x
  2. Step 2: Convert to fraction form
    348,375.20/521,542.20 = 260,020.40/x
  3. Step 3: Cross multiply
    348,375.20x = 521,542.20 × 260,020.40
  4. Step 4: Simplify right side
    348,375.20x = 135,611,611,460.88
  5. Step 5: Solve for x
    x = 135,611,611,460.88/348,375.20
  6. Step 6: Final answer
    x = 389,268.84

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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.