Home / 262,890.80-394,595.40-129,921.20

Finding the Fourth Proportional to 262,890.80, 394,595.40 and 129,921.20

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Solution

The fourth proportional to 262,890.80, 394,595.40 and 129,921.20 is: 195,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,890.80 : 394,595.40 = 129,921.20 : x
  2. Step 2: Convert to fraction form
    262,890.80/394,595.40 = 129,921.20/x
  3. Step 3: Cross multiply
    262,890.80x = 394,595.40 × 129,921.20
  4. Step 4: Simplify right side
    262,890.80x = 51,266,307,882.48
  5. Step 5: Solve for x
    x = 51,266,307,882.48/262,890.80
  6. Step 6: Final answer
    x = 195,009.90

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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.