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Finding the Fourth Proportional to 221,006.60, 331,362.25 and 69,152.25

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Solution

The fourth proportional to 221,006.60, 331,362.25 and 69,152.25 is: 103,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,006.60 : 331,362.25 = 69,152.25 : x
  2. Step 2: Convert to fraction form
    221,006.60/331,362.25 = 69,152.25/x
  3. Step 3: Cross multiply
    221,006.60x = 331,362.25 × 69,152.25
  4. Step 4: Simplify right side
    221,006.60x = 22,914,444,979.68
  5. Step 5: Solve for x
    x = 22,914,444,979.68/221,006.60
  6. Step 6: Final answer
    x = 103,682.18

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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.