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Finding the Fourth Proportional to 216,587.79, 324,918.68 and 66,825.27

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Solution

The fourth proportional to 216,587.79, 324,918.68 and 66,825.27 is: 100,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,587.79 : 324,918.68 = 66,825.27 : x
  2. Step 2: Convert to fraction form
    216,587.79/324,918.68 = 66,825.27/x
  3. Step 3: Cross multiply
    216,587.79x = 324,918.68 × 66,825.27
  4. Step 4: Simplify right side
    216,587.79x = 21,712,778,184.92
  5. Step 5: Solve for x
    x = 21,712,778,184.92/216,587.79
  6. Step 6: Final answer
    x = 100,249.32

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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.