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Finding the Fourth Proportional to 218,594.40, 303,035.93 and 206,620.58

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Solution

The fourth proportional to 218,594.40, 303,035.93 and 206,620.58 is: 286,436.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,594.40 : 303,035.93 = 206,620.58 : x
  2. Step 2: Convert to fraction form
    218,594.40/303,035.93 = 206,620.58/x
  3. Step 3: Cross multiply
    218,594.40x = 303,035.93 × 206,620.58
  4. Step 4: Simplify right side
    218,594.40x = 62,613,457,069.16
  5. Step 5: Solve for x
    x = 62,613,457,069.16/218,594.40
  6. Step 6: Final answer
    x = 286,436.69

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.