Home / 281,330.02-421,685.43-138,964.51

Finding the Fourth Proportional to 281,330.02, 421,685.43 and 138,964.51

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Solution

The fourth proportional to 281,330.02, 421,685.43 and 138,964.51 is: 208,293.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,330.02 : 421,685.43 = 138,964.51 : x
  2. Step 2: Convert to fraction form
    281,330.02/421,685.43 = 138,964.51/x
  3. Step 3: Cross multiply
    281,330.02x = 421,685.43 × 138,964.51
  4. Step 4: Simplify right side
    281,330.02x = 58,599,309,154.09
  5. Step 5: Solve for x
    x = 58,599,309,154.09/281,330.02
  6. Step 6: Final answer
    x = 208,293.84

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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.