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Finding the Fourth Proportional to 216,612.78, 324,920.07 and 142,203.75

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Solution

The fourth proportional to 216,612.78, 324,920.07 and 142,203.75 is: 213,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,612.78 : 324,920.07 = 142,203.75 : x
  2. Step 2: Convert to fraction form
    216,612.78/324,920.07 = 142,203.75/x
  3. Step 3: Cross multiply
    216,612.78x = 324,920.07 × 142,203.75
  4. Step 4: Simplify right side
    216,612.78x = 46,204,852,404.26
  5. Step 5: Solve for x
    x = 46,204,852,404.26/216,612.78
  6. Step 6: Final answer
    x = 213,306.22

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1.5x scale

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.