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Finding the Fourth Proportional to 421,060.52, 581,062.92 and 239,772.48

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Solution

The fourth proportional to 421,060.52, 581,062.92 and 239,772.48 is: 330,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,060.52 : 581,062.92 = 239,772.48 : x
  2. Step 2: Convert to fraction form
    421,060.52/581,062.92 = 239,772.48/x
  3. Step 3: Cross multiply
    421,060.52x = 581,062.92 × 239,772.48
  4. Step 4: Simplify right side
    421,060.52x = 139,322,897,364.44
  5. Step 5: Solve for x
    x = 139,322,897,364.44/421,060.52
  6. Step 6: Final answer
    x = 330,885.68

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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.