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Finding the Fourth Proportional to 348,367.20, 521,773.20 and 268,857.60

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Solution

The fourth proportional to 348,367.20, 521,773.20 and 268,857.60 is: 402,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,367.20 : 521,773.20 = 268,857.60 : x
  2. Step 2: Convert to fraction form
    348,367.20/521,773.20 = 268,857.60/x
  3. Step 3: Cross multiply
    348,367.20x = 521,773.20 × 268,857.60
  4. Step 4: Simplify right side
    348,367.20x = 140,282,690,296.32
  5. Step 5: Solve for x
    x = 140,282,690,296.32/348,367.20
  6. Step 6: Final answer
    x = 402,686.28

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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.