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Finding the Fourth Proportional to 475,604.58, 656,678.78 and 306,133.95

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Solution

The fourth proportional to 475,604.58, 656,678.78 and 306,133.95 is: 422,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,604.58 : 656,678.78 = 306,133.95 : x
  2. Step 2: Convert to fraction form
    475,604.58/656,678.78 = 306,133.95/x
  3. Step 3: Cross multiply
    475,604.58x = 656,678.78 × 306,133.95
  4. Step 4: Simplify right side
    475,604.58x = 201,031,667,188.64
  5. Step 5: Solve for x
    x = 201,031,667,188.64/475,604.58
  6. Step 6: Final answer
    x = 422,686.57

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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.