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Finding the Fourth Proportional to 404,921.66, 558,781.74 and 221,152.62

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Solution

The fourth proportional to 404,921.66, 558,781.74 and 221,152.62 is: 305,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,921.66 : 558,781.74 = 221,152.62 : x
  2. Step 2: Convert to fraction form
    404,921.66/558,781.74 = 221,152.62/x
  3. Step 3: Cross multiply
    404,921.66x = 558,781.74 × 221,152.62
  4. Step 4: Simplify right side
    404,921.66x = 123,576,045,809.16
  5. Step 5: Solve for x
    x = 123,576,045,809.16/404,921.66
  6. Step 6: Final answer
    x = 305,185.07

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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.