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Finding the Fourth Proportional to 438,194.50, 604,708.41 and 236,990.50

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Solution

The fourth proportional to 438,194.50, 604,708.41 and 236,990.50 is: 327,046.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,194.50 : 604,708.41 = 236,990.50 : x
  2. Step 2: Convert to fraction form
    438,194.50/604,708.41 = 236,990.50/x
  3. Step 3: Cross multiply
    438,194.50x = 604,708.41 × 236,990.50
  4. Step 4: Simplify right side
    438,194.50x = 143,310,148,440.11
  5. Step 5: Solve for x
    x = 143,310,148,440.11/438,194.50
  6. Step 6: Final answer
    x = 327,046.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.