Home / 402,904.28-555,996.30-221,616.20

Finding the Fourth Proportional to 402,904.28, 555,996.30 and 221,616.20

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Solution

The fourth proportional to 402,904.28, 555,996.30 and 221,616.20 is: 305,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,904.28 : 555,996.30 = 221,616.20 : x
  2. Step 2: Convert to fraction form
    402,904.28/555,996.30 = 221,616.20/x
  3. Step 3: Cross multiply
    402,904.28x = 555,996.30 × 221,616.20
  4. Step 4: Simplify right side
    402,904.28x = 123,217,787,220.06
  5. Step 5: Solve for x
    x = 123,217,787,220.06/402,904.28
  6. Step 6: Final answer
    x = 305,823.97

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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.