Home / 381,815.80-572,723.70-269,258.20

Finding the Fourth Proportional to 381,815.80, 572,723.70 and 269,258.20

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Solution

The fourth proportional to 381,815.80, 572,723.70 and 269,258.20 is: 403,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,815.80 : 572,723.70 = 269,258.20 : x
  2. Step 2: Convert to fraction form
    381,815.80/572,723.70 = 269,258.20/x
  3. Step 3: Cross multiply
    381,815.80x = 572,723.70 × 269,258.20
  4. Step 4: Simplify right side
    381,815.80x = 154,210,552,559.34
  5. Step 5: Solve for x
    x = 154,210,552,559.34/381,815.80
  6. Step 6: Final answer
    x = 403,887.30

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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.