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Finding the Fourth Proportional to 248,003.80, 371,976.90 and 70,538.20

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Solution

The fourth proportional to 248,003.80, 371,976.90 and 70,538.20 is: 105,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,003.80 : 371,976.90 = 70,538.20 : x
  2. Step 2: Convert to fraction form
    248,003.80/371,976.90 = 70,538.20/x
  3. Step 3: Cross multiply
    248,003.80x = 371,976.90 × 70,538.20
  4. Step 4: Simplify right side
    248,003.80x = 26,238,580,967.58
  5. Step 5: Solve for x
    x = 26,238,580,967.58/248,003.80
  6. Step 6: Final answer
    x = 105,799.11

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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.