Home / 403,439.25-605,238.74-115,253.39

Finding the Fourth Proportional to 403,439.25, 605,238.74 and 115,253.39

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Solution

The fourth proportional to 403,439.25, 605,238.74 and 115,253.39 is: 172,902.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,439.25 : 605,238.74 = 115,253.39 : x
  2. Step 2: Convert to fraction form
    403,439.25/605,238.74 = 115,253.39/x
  3. Step 3: Cross multiply
    403,439.25x = 605,238.74 × 115,253.39
  4. Step 4: Simplify right side
    403,439.25x = 69,755,812,941.87
  5. Step 5: Solve for x
    x = 69,755,812,941.87/403,439.25
  6. Step 6: Final answer
    x = 172,902.89

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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.