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Finding the Fourth Proportional to 288,451, 397,803.81 and 240,212.67

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Solution

The fourth proportional to 288,451, 397,803.81 and 240,212.67 is: 331,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,451 : 397,803.81 = 240,212.67 : x
  2. Step 2: Convert to fraction form
    288,451/397,803.81 = 240,212.67/x
  3. Step 3: Cross multiply
    288,451x = 397,803.81 × 240,212.67
  4. Step 4: Simplify right side
    288,451x = 95,557,515,336.27
  5. Step 5: Solve for x
    x = 95,557,515,336.27/288,451
  6. Step 6: Final answer
    x = 331,278.16

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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.