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Finding the Fourth Proportional to 381,119.72, 575,138.21 and 368,414.87

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Solution

The fourth proportional to 381,119.72, 575,138.21 and 368,414.87 is: 555,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,119.72 : 575,138.21 = 368,414.87 : x
  2. Step 2: Convert to fraction form
    381,119.72/575,138.21 = 368,414.87/x
  3. Step 3: Cross multiply
    381,119.72x = 575,138.21 × 368,414.87
  4. Step 4: Simplify right side
    381,119.72x = 211,889,464,151.42
  5. Step 5: Solve for x
    x = 211,889,464,151.42/381,119.72
  6. Step 6: Final answer
    x = 555,965.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.