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Finding the Fourth Proportional to 268,856.74, 403,285.11 and 251,140.42

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Solution

The fourth proportional to 268,856.74, 403,285.11 and 251,140.42 is: 376,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,856.74 : 403,285.11 = 251,140.42 : x
  2. Step 2: Convert to fraction form
    268,856.74/403,285.11 = 251,140.42/x
  3. Step 3: Cross multiply
    268,856.74x = 403,285.11 × 251,140.42
  4. Step 4: Simplify right side
    268,856.74x = 101,281,191,905.15
  5. Step 5: Solve for x
    x = 101,281,191,905.15/268,856.74
  6. Step 6: Final answer
    x = 376,710.63

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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.