Home / 281,288.07-421,964.91-112,867.20

Finding the Fourth Proportional to 281,288.07, 421,964.91 and 112,867.20

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Solution

The fourth proportional to 281,288.07, 421,964.91 and 112,867.20 is: 169,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,288.07 : 421,964.91 = 112,867.20 : x
  2. Step 2: Convert to fraction form
    281,288.07/421,964.91 = 112,867.20/x
  3. Step 3: Cross multiply
    281,288.07x = 421,964.91 × 112,867.20
  4. Step 4: Simplify right side
    281,288.07x = 47,625,997,889.95
  5. Step 5: Solve for x
    x = 47,625,997,889.95/281,288.07
  6. Step 6: Final answer
    x = 169,313.96

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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.