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Finding the Fourth Proportional to 248,705.40, 372,839.40 and 148,905.30

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Solution

The fourth proportional to 248,705.40, 372,839.40 and 148,905.30 is: 223,227.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,705.40 : 372,839.40 = 148,905.30 : x
  2. Step 2: Convert to fraction form
    248,705.40/372,839.40 = 148,905.30/x
  3. Step 3: Cross multiply
    248,705.40x = 372,839.40 × 148,905.30
  4. Step 4: Simplify right side
    248,705.40x = 55,517,762,708.82
  5. Step 5: Solve for x
    x = 55,517,762,708.82/248,705.40
  6. Step 6: Final answer
    x = 223,227.01

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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.