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Finding the Fourth Proportional to 418,100.80, 627,442.80 and 268,704.40

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Solution

The fourth proportional to 418,100.80, 627,442.80 and 268,704.40 is: 403,244.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,100.80 : 627,442.80 = 268,704.40 : x
  2. Step 2: Convert to fraction form
    418,100.80/627,442.80 = 268,704.40/x
  3. Step 3: Cross multiply
    418,100.80x = 627,442.80 × 268,704.40
  4. Step 4: Simplify right side
    418,100.80x = 168,596,641,108.32
  5. Step 5: Solve for x
    x = 168,596,641,108.32/418,100.80
  6. Step 6: Final answer
    x = 403,244.01

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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.