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Finding the Fourth Proportional to 216,682.10, 325,116.20 and 83,655.79

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Solution

The fourth proportional to 216,682.10, 325,116.20 and 83,655.79 is: 125,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,682.10 : 325,116.20 = 83,655.79 : x
  2. Step 2: Convert to fraction form
    216,682.10/325,116.20 = 83,655.79/x
  3. Step 3: Cross multiply
    216,682.10x = 325,116.20 × 83,655.79
  4. Step 4: Simplify right side
    216,682.10x = 27,197,850,508.94
  5. Step 5: Solve for x
    x = 27,197,850,508.94/216,682.10
  6. Step 6: Final answer
    x = 125,519.60

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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.