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Finding the Fourth Proportional to 475,318.69, 655,939.80 and 274,114.69

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Solution

The fourth proportional to 475,318.69, 655,939.80 and 274,114.69 is: 378,278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,318.69 : 655,939.80 = 274,114.69 : x
  2. Step 2: Convert to fraction form
    475,318.69/655,939.80 = 274,114.69/x
  3. Step 3: Cross multiply
    475,318.69x = 655,939.80 × 274,114.69
  4. Step 4: Simplify right side
    475,318.69x = 179,802,733,295.81
  5. Step 5: Solve for x
    x = 179,802,733,295.81/475,318.69
  6. Step 6: Final answer
    x = 378,278.28

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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.