Home / 281,200.30-421,836.90-139,118.20

Finding the Fourth Proportional to 281,200.30, 421,836.90 and 139,118.20

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Solution

The fourth proportional to 281,200.30, 421,836.90 and 139,118.20 is: 208,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,200.30 : 421,836.90 = 139,118.20 : x
  2. Step 2: Convert to fraction form
    281,200.30/421,836.90 = 139,118.20/x
  3. Step 3: Cross multiply
    281,200.30x = 421,836.90 × 139,118.20
  4. Step 4: Simplify right side
    281,200.30x = 58,685,190,221.58
  5. Step 5: Solve for x
    x = 58,685,190,221.58/281,200.30
  6. Step 6: Final answer
    x = 208,695.33

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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.