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Finding the Fourth Proportional to 403,170, 604,842.45 and 122,679.96

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Solution

The fourth proportional to 403,170, 604,842.45 and 122,679.96 is: 184,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,170 : 604,842.45 = 122,679.96 : x
  2. Step 2: Convert to fraction form
    403,170/604,842.45 = 122,679.96/x
  3. Step 3: Cross multiply
    403,170x = 604,842.45 × 122,679.96
  4. Step 4: Simplify right side
    403,170x = 74,202,047,572.30
  5. Step 5: Solve for x
    x = 74,202,047,572.30/403,170
  6. Step 6: Final answer
    x = 184,046.55

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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.