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Finding the Fourth Proportional to 248,603.40, 372,905.10 and 71,116.20

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Solution

The fourth proportional to 248,603.40, 372,905.10 and 71,116.20 is: 106,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,603.40 : 372,905.10 = 71,116.20 : x
  2. Step 2: Convert to fraction form
    248,603.40/372,905.10 = 71,116.20/x
  3. Step 3: Cross multiply
    248,603.40x = 372,905.10 × 71,116.20
  4. Step 4: Simplify right side
    248,603.40x = 26,519,593,672.62
  5. Step 5: Solve for x
    x = 26,519,593,672.62/248,603.40
  6. Step 6: Final answer
    x = 106,674.30

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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.