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Finding the Fourth Proportional to 290,274.99, 400,577.90 and 162,950.55

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Solution

The fourth proportional to 290,274.99, 400,577.90 and 162,950.55 is: 224,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,274.99 : 400,577.90 = 162,950.55 : x
  2. Step 2: Convert to fraction form
    290,274.99/400,577.90 = 162,950.55/x
  3. Step 3: Cross multiply
    290,274.99x = 400,577.90 × 162,950.55
  4. Step 4: Simplify right side
    290,274.99x = 65,274,389,122.85
  5. Step 5: Solve for x
    x = 65,274,389,122.85/290,274.99
  6. Step 6: Final answer
    x = 224,870.87

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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.