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Finding the Fourth Proportional to 281,352.69, 421,031.52 and 248,137.43

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Solution

The fourth proportional to 281,352.69, 421,031.52 and 248,137.43 is: 371,326.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,352.69 : 421,031.52 = 248,137.43 : x
  2. Step 2: Convert to fraction form
    281,352.69/421,031.52 = 248,137.43/x
  3. Step 3: Cross multiply
    281,352.69x = 421,031.52 × 248,137.43
  4. Step 4: Simplify right side
    281,352.69x = 104,473,677,216.64
  5. Step 5: Solve for x
    x = 104,473,677,216.64/281,352.69
  6. Step 6: Final answer
    x = 371,326.38

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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.