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Finding the Fourth Proportional to 438,739.64, 658,149.62 and 123,194.42

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Solution

The fourth proportional to 438,739.64, 658,149.62 and 123,194.42 is: 184,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,739.64 : 658,149.62 = 123,194.42 : x
  2. Step 2: Convert to fraction form
    438,739.64/658,149.62 = 123,194.42/x
  3. Step 3: Cross multiply
    438,739.64x = 658,149.62 × 123,194.42
  4. Step 4: Simplify right side
    438,739.64x = 81,080,356,802.40
  5. Step 5: Solve for x
    x = 81,080,356,802.40/438,739.64
  6. Step 6: Final answer
    x = 184,802.90

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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.