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Finding the Fourth Proportional to 217,752.50, 326,649.36 and 84,643.04

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Solution

The fourth proportional to 217,752.50, 326,649.36 and 84,643.04 is: 126,972.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,752.50 : 326,649.36 = 84,643.04 : x
  2. Step 2: Convert to fraction form
    217,752.50/326,649.36 = 84,643.04/x
  3. Step 3: Cross multiply
    217,752.50x = 326,649.36 × 84,643.04
  4. Step 4: Simplify right side
    217,752.50x = 27,648,594,844.45
  5. Step 5: Solve for x
    x = 27,648,594,844.45/217,752.50
  6. Step 6: Final answer
    x = 126,972.57

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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.