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Finding the Fourth Proportional to 248,635.40, 372,953.10 and 71,148.20

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Solution

The fourth proportional to 248,635.40, 372,953.10 and 71,148.20 is: 106,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,635.40 : 372,953.10 = 71,148.20 : x
  2. Step 2: Convert to fraction form
    248,635.40/372,953.10 = 71,148.20/x
  3. Step 3: Cross multiply
    248,635.40x = 372,953.10 × 71,148.20
  4. Step 4: Simplify right side
    248,635.40x = 26,534,941,749.42
  5. Step 5: Solve for x
    x = 26,534,941,749.42/248,635.40
  6. Step 6: Final answer
    x = 106,722.30

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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.