Home / 239,276.16-330,181.92-138,680.64

Finding the Fourth Proportional to 239,276.16, 330,181.92 and 138,680.64

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Solution

The fourth proportional to 239,276.16, 330,181.92 and 138,680.64 is: 191,368.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,276.16 : 330,181.92 = 138,680.64 : x
  2. Step 2: Convert to fraction form
    239,276.16/330,181.92 = 138,680.64/x
  3. Step 3: Cross multiply
    239,276.16x = 330,181.92 × 138,680.64
  4. Step 4: Simplify right side
    239,276.16x = 45,789,839,982.03
  5. Step 5: Solve for x
    x = 45,789,839,982.03/239,276.16
  6. Step 6: Final answer
    x = 191,368.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.