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Finding the Fourth Proportional to 403,374.78, 605,062.20 and 122,892

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Solution

The fourth proportional to 403,374.78, 605,062.20 and 122,892 is: 184,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,374.78 : 605,062.20 = 122,892 : x
  2. Step 2: Convert to fraction form
    403,374.78/605,062.20 = 122,892/x
  3. Step 3: Cross multiply
    403,374.78x = 605,062.20 × 122,892
  4. Step 4: Simplify right side
    403,374.78x = 74,357,303,882.40
  5. Step 5: Solve for x
    x = 74,357,303,882.40/403,374.78
  6. Step 6: Final answer
    x = 184,338.01

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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.