Home / 402,905.02-555,997.20-221,616.92

Finding the Fourth Proportional to 402,905.02, 555,997.20 and 221,616.92

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Solution

The fourth proportional to 402,905.02, 555,997.20 and 221,616.92 is: 305,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,905.02 : 555,997.20 = 221,616.92 : x
  2. Step 2: Convert to fraction form
    402,905.02/555,997.20 = 221,616.92/x
  3. Step 3: Cross multiply
    402,905.02x = 555,997.20 × 221,616.92
  4. Step 4: Simplify right side
    402,905.02x = 123,218,386,992.62
  5. Step 5: Solve for x
    x = 123,218,386,992.62/402,905.02
  6. Step 6: Final answer
    x = 305,824.90

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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.