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Finding the Fourth Proportional to 386,713.49, 533,728.73 and 225,568.55

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Solution

The fourth proportional to 386,713.49, 533,728.73 and 225,568.55 is: 311,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,713.49 : 533,728.73 = 225,568.55 : x
  2. Step 2: Convert to fraction form
    386,713.49/533,728.73 = 225,568.55/x
  3. Step 3: Cross multiply
    386,713.49x = 533,728.73 × 225,568.55
  4. Step 4: Simplify right side
    386,713.49x = 120,392,417,617.69
  5. Step 5: Solve for x
    x = 120,392,417,617.69/386,713.49
  6. Step 6: Final answer
    x = 311,322.01

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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.