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Finding the Fourth Proportional to 248,390.28, 372,376.44 and 108,043.20

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Solution

The fourth proportional to 248,390.28, 372,376.44 and 108,043.20 is: 161,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,390.28 : 372,376.44 = 108,043.20 : x
  2. Step 2: Convert to fraction form
    248,390.28/372,376.44 = 108,043.20/x
  3. Step 3: Cross multiply
    248,390.28x = 372,376.44 × 108,043.20
  4. Step 4: Simplify right side
    248,390.28x = 40,232,742,182.21
  5. Step 5: Solve for x
    x = 40,232,742,182.21/248,390.28
  6. Step 6: Final answer
    x = 161,973.90

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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.