Home / 382,507.20-527,823-221,330.16

Finding the Fourth Proportional to 382,507.20, 527,823 and 221,330.16

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Solution

The fourth proportional to 382,507.20, 527,823 and 221,330.16 is: 305,414.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,507.20 : 527,823 = 221,330.16 : x
  2. Step 2: Convert to fraction form
    382,507.20/527,823 = 221,330.16/x
  3. Step 3: Cross multiply
    382,507.20x = 527,823 × 221,330.16
  4. Step 4: Simplify right side
    382,507.20x = 116,823,149,041.68
  5. Step 5: Solve for x
    x = 116,823,149,041.68/382,507.20
  6. Step 6: Final answer
    x = 305,414.25

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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.