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Finding the Fourth Proportional to 499,419.69, 689,199.15 and 273,065.19

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Solution

The fourth proportional to 499,419.69, 689,199.15 and 273,065.19 is: 376,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,419.69 : 689,199.15 = 273,065.19 : x
  2. Step 2: Convert to fraction form
    499,419.69/689,199.15 = 273,065.19/x
  3. Step 3: Cross multiply
    499,419.69x = 689,199.15 × 273,065.19
  4. Step 4: Simplify right side
    499,419.69x = 188,196,296,842.59
  5. Step 5: Solve for x
    x = 188,196,296,842.59/499,419.69
  6. Step 6: Final answer
    x = 376,829.95

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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.