Home / 366,821.19-506,218.41-221,606.78

Finding the Fourth Proportional to 366,821.19, 506,218.41 and 221,606.78

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Solution

The fourth proportional to 366,821.19, 506,218.41 and 221,606.78 is: 305,820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,821.19 : 506,218.41 = 221,606.78 : x
  2. Step 2: Convert to fraction form
    366,821.19/506,218.41 = 221,606.78/x
  3. Step 3: Cross multiply
    366,821.19x = 506,218.41 × 221,606.78
  4. Step 4: Simplify right side
    366,821.19x = 112,181,431,816.82
  5. Step 5: Solve for x
    x = 112,181,431,816.82/366,821.19
  6. Step 6: Final answer
    x = 305,820.48

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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.