Home / 281,314.45-421,860.50-91,728.21

Finding the Fourth Proportional to 281,314.45, 421,860.50 and 91,728.21

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Solution

The fourth proportional to 281,314.45, 421,860.50 and 91,728.21 is: 137,556.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,314.45 : 421,860.50 = 91,728.21 : x
  2. Step 2: Convert to fraction form
    281,314.45/421,860.50 = 91,728.21/x
  3. Step 3: Cross multiply
    281,314.45x = 421,860.50 × 91,728.21
  4. Step 4: Simplify right side
    281,314.45x = 38,696,508,534.71
  5. Step 5: Solve for x
    x = 38,696,508,534.71/281,314.45
  6. Step 6: Final answer
    x = 137,556.06

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1.5x scale

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.