Home / 280,727.56-421,232.10-130,979.80

Finding the Fourth Proportional to 280,727.56, 421,232.10 and 130,979.80

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Solution

The fourth proportional to 280,727.56, 421,232.10 and 130,979.80 is: 196,535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,727.56 : 421,232.10 = 130,979.80 : x
  2. Step 2: Convert to fraction form
    280,727.56/421,232.10 = 130,979.80/x
  3. Step 3: Cross multiply
    280,727.56x = 421,232.10 × 130,979.80
  4. Step 4: Simplify right side
    280,727.56x = 55,172,896,211.58
  5. Step 5: Solve for x
    x = 55,172,896,211.58/280,727.56
  6. Step 6: Final answer
    x = 196,535.37

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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.