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Finding the Fourth Proportional to 216,279.87, 324,536.00 and 90,007.17

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Solution

The fourth proportional to 216,279.87, 324,536.00 and 90,007.17 is: 135,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,279.87 : 324,536.00 = 90,007.17 : x
  2. Step 2: Convert to fraction form
    216,279.87/324,536.00 = 90,007.17/x
  3. Step 3: Cross multiply
    216,279.87x = 324,536.00 × 90,007.17
  4. Step 4: Simplify right side
    216,279.87x = 29,210,567,334.73
  5. Step 5: Solve for x
    x = 29,210,567,334.73/216,279.87
  6. Step 6: Final answer
    x = 135,059.11

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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.