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Finding the Fourth Proportional to 288,043.87, 397,389.67 and 180,426.55

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Solution

The fourth proportional to 288,043.87, 397,389.67 and 180,426.55 is: 248,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,043.87 : 397,389.67 = 180,426.55 : x
  2. Step 2: Convert to fraction form
    288,043.87/397,389.67 = 180,426.55/x
  3. Step 3: Cross multiply
    288,043.87x = 397,389.67 × 180,426.55
  4. Step 4: Simplify right side
    288,043.87x = 71,699,647,163.74
  5. Step 5: Solve for x
    x = 71,699,647,163.74/288,043.87
  6. Step 6: Final answer
    x = 248,919.19

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1.5x scale

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.