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Finding the Fourth Proportional to 503,687.31, 695,105.55 and 274,253.50

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Solution

The fourth proportional to 503,687.31, 695,105.55 and 274,253.50 is: 378,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,687.31 : 695,105.55 = 274,253.50 : x
  2. Step 2: Convert to fraction form
    503,687.31/695,105.55 = 274,253.50/x
  3. Step 3: Cross multiply
    503,687.31x = 695,105.55 × 274,253.50
  4. Step 4: Simplify right side
    503,687.31x = 190,635,126,915.84
  5. Step 5: Solve for x
    x = 190,635,126,915.84/503,687.31
  6. Step 6: Final answer
    x = 378,479.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.