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Finding the Fourth Proportional to 504,458.13, 696,156.98 and 278,111.73

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Solution

The fourth proportional to 504,458.13, 696,156.98 and 278,111.73 is: 383,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,458.13 : 696,156.98 = 278,111.73 : x
  2. Step 2: Convert to fraction form
    504,458.13/696,156.98 = 278,111.73/x
  3. Step 3: Cross multiply
    504,458.13x = 696,156.98 × 278,111.73
  4. Step 4: Simplify right side
    504,458.13x = 193,609,420,668.82
  5. Step 5: Solve for x
    x = 193,609,420,668.82/504,458.13
  6. Step 6: Final answer
    x = 383,796.81

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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.