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Finding the Fourth Proportional to 281,243.61, 421,898.15 and 98,818.35

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Solution

The fourth proportional to 281,243.61, 421,898.15 and 98,818.35 is: 148,239.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,243.61 : 421,898.15 = 98,818.35 : x
  2. Step 2: Convert to fraction form
    281,243.61/421,898.15 = 98,818.35/x
  3. Step 3: Cross multiply
    281,243.61x = 421,898.15 × 98,818.35
  4. Step 4: Simplify right side
    281,243.61x = 41,691,278,556.96
  5. Step 5: Solve for x
    x = 41,691,278,556.96/281,243.61
  6. Step 6: Final answer
    x = 148,239.03

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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.