Home / 281,335.71-421,799.45-131,492.19

Finding the Fourth Proportional to 281,335.71, 421,799.45 and 131,492.19

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Solution

The fourth proportional to 281,335.71, 421,799.45 and 131,492.19 is: 197,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,335.71 : 421,799.45 = 131,492.19 : x
  2. Step 2: Convert to fraction form
    281,335.71/421,799.45 = 131,492.19/x
  3. Step 3: Cross multiply
    281,335.71x = 421,799.45 × 131,492.19
  4. Step 4: Simplify right side
    281,335.71x = 55,463,332,763.83
  5. Step 5: Solve for x
    x = 55,463,332,763.83/281,335.71
  6. Step 6: Final answer
    x = 197,142.88

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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.