Home / 221,120.80-331,316.40-127,463.20

Finding the Fourth Proportional to 221,120.80, 331,316.40 and 127,463.20

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Solution

The fourth proportional to 221,120.80, 331,316.40 and 127,463.20 is: 190,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,120.80 : 331,316.40 = 127,463.20 : x
  2. Step 2: Convert to fraction form
    221,120.80/331,316.40 = 127,463.20/x
  3. Step 3: Cross multiply
    221,120.80x = 331,316.40 × 127,463.20
  4. Step 4: Simplify right side
    221,120.80x = 42,230,648,556.48
  5. Step 5: Solve for x
    x = 42,230,648,556.48/221,120.80
  6. Step 6: Final answer
    x = 190,984.51

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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.