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Finding the Fourth Proportional to 403,956.20, 605,934.30 and 325,224.20

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Solution

The fourth proportional to 403,956.20, 605,934.30 and 325,224.20 is: 487,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,956.20 : 605,934.30 = 325,224.20 : x
  2. Step 2: Convert to fraction form
    403,956.20/605,934.30 = 325,224.20/x
  3. Step 3: Cross multiply
    403,956.20x = 605,934.30 × 325,224.20
  4. Step 4: Simplify right side
    403,956.20x = 197,064,497,970.06
  5. Step 5: Solve for x
    x = 197,064,497,970.06/403,956.20
  6. Step 6: Final answer
    x = 487,836.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.