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Finding the Fourth Proportional to 403,895.40, 605,324.70 and 245,956.20

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Solution

The fourth proportional to 403,895.40, 605,324.70 and 245,956.20 is: 368,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,895.40 : 605,324.70 = 245,956.20 : x
  2. Step 2: Convert to fraction form
    403,895.40/605,324.70 = 245,956.20/x
  3. Step 3: Cross multiply
    403,895.40x = 605,324.70 × 245,956.20
  4. Step 4: Simplify right side
    403,895.40x = 148,883,362,978.14
  5. Step 5: Solve for x
    x = 148,883,362,978.14/403,895.40
  6. Step 6: Final answer
    x = 368,618.62

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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.