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Finding the Fourth Proportional to 499,393.55, 689,162.75 and 269,950.83

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Solution

The fourth proportional to 499,393.55, 689,162.75 and 269,950.83 is: 372,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,393.55 : 689,162.75 = 269,950.83 : x
  2. Step 2: Convert to fraction form
    499,393.55/689,162.75 = 269,950.83/x
  3. Step 3: Cross multiply
    499,393.55x = 689,162.75 × 269,950.83
  4. Step 4: Simplify right side
    499,393.55x = 186,040,053,445.78
  5. Step 5: Solve for x
    x = 186,040,053,445.78/499,393.55
  6. Step 6: Final answer
    x = 372,531.95

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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.