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Finding the Fourth Proportional to 503,709.30, 695,131.29 and 274,279.15

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Solution

The fourth proportional to 503,709.30, 695,131.29 and 274,279.15 is: 378,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,709.30 : 695,131.29 = 274,279.15 : x
  2. Step 2: Convert to fraction form
    503,709.30/695,131.29 = 274,279.15/x
  3. Step 3: Cross multiply
    503,709.30x = 695,131.29 × 274,279.15
  4. Step 4: Simplify right side
    503,709.30x = 190,660,019,359.60
  5. Step 5: Solve for x
    x = 190,660,019,359.60/503,709.30
  6. Step 6: Final answer
    x = 378,512.01

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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.