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Finding the Fourth Proportional to 217,298.84, 325,866.33 and 90,947.84

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Solution

The fourth proportional to 217,298.84, 325,866.33 and 90,947.84 is: 136,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,298.84 : 325,866.33 = 90,947.84 : x
  2. Step 2: Convert to fraction form
    217,298.84/325,866.33 = 90,947.84/x
  3. Step 3: Cross multiply
    217,298.84x = 325,866.33 × 90,947.84
  4. Step 4: Simplify right side
    217,298.84x = 29,636,837,212.90
  5. Step 5: Solve for x
    x = 29,636,837,212.90/217,298.84
  6. Step 6: Final answer
    x = 136,387.46

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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.