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Finding the Fourth Proportional to 437,878.20, 656,817.30 and 251,254.20

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Solution

The fourth proportional to 437,878.20, 656,817.30 and 251,254.20 is: 376,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,878.20 : 656,817.30 = 251,254.20 : x
  2. Step 2: Convert to fraction form
    437,878.20/656,817.30 = 251,254.20/x
  3. Step 3: Cross multiply
    437,878.20x = 656,817.30 × 251,254.20
  4. Step 4: Simplify right side
    437,878.20x = 165,028,105,257.66
  5. Step 5: Solve for x
    x = 165,028,105,257.66/437,878.20
  6. Step 6: Final answer
    x = 376,881.30

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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.