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Finding the Fourth Proportional to 403,396.40, 605,094.60 and 107,908.40

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Solution

The fourth proportional to 403,396.40, 605,094.60 and 107,908.40 is: 161,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,396.40 : 605,094.60 = 107,908.40 : x
  2. Step 2: Convert to fraction form
    403,396.40/605,094.60 = 107,908.40/x
  3. Step 3: Cross multiply
    403,396.40x = 605,094.60 × 107,908.40
  4. Step 4: Simplify right side
    403,396.40x = 65,294,790,134.64
  5. Step 5: Solve for x
    x = 65,294,790,134.64/403,396.40
  6. Step 6: Final answer
    x = 161,862.60

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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.