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Finding the Fourth Proportional to 290,901.62, 400,986.78 and 266,494.70

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Solution

The fourth proportional to 290,901.62, 400,986.78 and 266,494.70 is: 367,343.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,901.62 : 400,986.78 = 266,494.70 : x
  2. Step 2: Convert to fraction form
    290,901.62/400,986.78 = 266,494.70/x
  3. Step 3: Cross multiply
    290,901.62x = 400,986.78 × 266,494.70
  4. Step 4: Simplify right side
    290,901.62x = 106,860,851,640.07
  5. Step 5: Solve for x
    x = 106,860,851,640.07/290,901.62
  6. Step 6: Final answer
    x = 367,343.61

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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.