Home / 239,311.87-330,258.67-130,425.29

Finding the Fourth Proportional to 239,311.87, 330,258.67 and 130,425.29

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Solution

The fourth proportional to 239,311.87, 330,258.67 and 130,425.29 is: 179,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,311.87 : 330,258.67 = 130,425.29 : x
  2. Step 2: Convert to fraction form
    239,311.87/330,258.67 = 130,425.29/x
  3. Step 3: Cross multiply
    239,311.87x = 330,258.67 × 130,425.29
  4. Step 4: Simplify right side
    239,311.87x = 43,074,082,809.76
  5. Step 5: Solve for x
    x = 43,074,082,809.76/239,311.87
  6. Step 6: Final answer
    x = 179,991.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.