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Finding the Fourth Proportional to 438,781.79, 658,197.31 and 123,214.10

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Solution

The fourth proportional to 438,781.79, 658,197.31 and 123,214.10 is: 184,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,781.79 : 658,197.31 = 123,214.10 : x
  2. Step 2: Convert to fraction form
    438,781.79/658,197.31 = 123,214.10/x
  3. Step 3: Cross multiply
    438,781.79x = 658,197.31 × 123,214.10
  4. Step 4: Simplify right side
    438,781.79x = 81,099,185,883.08
  5. Step 5: Solve for x
    x = 81,099,185,883.08/438,781.79
  6. Step 6: Final answer
    x = 184,828.06

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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.