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Finding the Fourth Proportional to 438,192, 604,704.96 and 236,988

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Solution

The fourth proportional to 438,192, 604,704.96 and 236,988 is: 327,043.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,192 : 604,704.96 = 236,988 : x
  2. Step 2: Convert to fraction form
    438,192/604,704.96 = 236,988/x
  3. Step 3: Cross multiply
    438,192x = 604,704.96 × 236,988
  4. Step 4: Simplify right side
    438,192x = 143,307,819,060.48
  5. Step 5: Solve for x
    x = 143,307,819,060.48/438,192
  6. Step 6: Final answer
    x = 327,043.44

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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.