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Finding the Fourth Proportional to 206,114.40, 308,998.80 and 107,618.40

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Solution

The fourth proportional to 206,114.40, 308,998.80 and 107,618.40 is: 161,337.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,114.40 : 308,998.80 = 107,618.40 : x
  2. Step 2: Convert to fraction form
    206,114.40/308,998.80 = 107,618.40/x
  3. Step 3: Cross multiply
    206,114.40x = 308,998.80 × 107,618.40
  4. Step 4: Simplify right side
    206,114.40x = 33,253,956,457.92
  5. Step 5: Solve for x
    x = 33,253,956,457.92/206,114.40
  6. Step 6: Final answer
    x = 161,337.38

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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.