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Finding the Fourth Proportional to 272,209.83, 408,313.83 and 69,805.71

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Solution

The fourth proportional to 272,209.83, 408,313.83 and 69,805.71 is: 104,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,209.83 : 408,313.83 = 69,805.71 : x
  2. Step 2: Convert to fraction form
    272,209.83/408,313.83 = 69,805.71/x
  3. Step 3: Cross multiply
    272,209.83x = 408,313.83 × 69,805.71
  4. Step 4: Simplify right side
    272,209.83x = 28,502,636,805.97
  5. Step 5: Solve for x
    x = 28,502,636,805.97/272,209.83
  6. Step 6: Final answer
    x = 104,708.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.