Home / 281,205.06-421,277.81-138,883.74

Finding the Fourth Proportional to 281,205.06, 421,277.81 and 138,883.74

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Solution

The fourth proportional to 281,205.06, 421,277.81 and 138,883.74 is: 208,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,205.06 : 421,277.81 = 138,883.74 : x
  2. Step 2: Convert to fraction form
    281,205.06/421,277.81 = 138,883.74/x
  3. Step 3: Cross multiply
    281,205.06x = 421,277.81 × 138,883.74
  4. Step 4: Simplify right side
    281,205.06x = 58,508,637,137.39
  5. Step 5: Solve for x
    x = 58,508,637,137.39/281,205.06
  6. Step 6: Final answer
    x = 208,063.96

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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.