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Finding the Fourth Proportional to 216,066.69, 323,878.50 and 82,911.20

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Solution

The fourth proportional to 216,066.69, 323,878.50 and 82,911.20 is: 124,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,066.69 : 323,878.50 = 82,911.20 : x
  2. Step 2: Convert to fraction form
    216,066.69/323,878.50 = 82,911.20/x
  3. Step 3: Cross multiply
    216,066.69x = 323,878.50 × 82,911.20
  4. Step 4: Simplify right side
    216,066.69x = 26,853,153,469.81
  5. Step 5: Solve for x
    x = 26,853,153,469.81/216,066.69
  6. Step 6: Final answer
    x = 124,281.78

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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.