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Finding the Fourth Proportional to 403,388.72, 605,170.20 and 122,898.32

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Solution

The fourth proportional to 403,388.72, 605,170.20 and 122,898.32 is: 184,374.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,388.72 : 605,170.20 = 122,898.32 : x
  2. Step 2: Convert to fraction form
    403,388.72/605,170.20 = 122,898.32/x
  3. Step 3: Cross multiply
    403,388.72x = 605,170.20 × 122,898.32
  4. Step 4: Simplify right side
    403,388.72x = 74,374,400,894.06
  5. Step 5: Solve for x
    x = 74,374,400,894.06/403,388.72
  6. Step 6: Final answer
    x = 184,374.02

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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.