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Finding the Fourth Proportional to 303,354.28, 418,780.47 and 188,669.89

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Solution

The fourth proportional to 303,354.28, 418,780.47 and 188,669.89 is: 260,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,354.28 : 418,780.47 = 188,669.89 : x
  2. Step 2: Convert to fraction form
    303,354.28/418,780.47 = 188,669.89/x
  3. Step 3: Cross multiply
    303,354.28x = 418,780.47 × 188,669.89
  4. Step 4: Simplify right side
    303,354.28x = 79,011,265,209.05
  5. Step 5: Solve for x
    x = 79,011,265,209.05/303,354.28
  6. Step 6: Final answer
    x = 260,458.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.