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Finding the Fourth Proportional to 401,572.84, 554,182.50 and 222,721

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Solution

The fourth proportional to 401,572.84, 554,182.50 and 222,721 is: 307,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,572.84 : 554,182.50 = 222,721 : x
  2. Step 2: Convert to fraction form
    401,572.84/554,182.50 = 222,721/x
  3. Step 3: Cross multiply
    401,572.84x = 554,182.50 × 222,721
  4. Step 4: Simplify right side
    401,572.84x = 123,428,080,582.50
  5. Step 5: Solve for x
    x = 123,428,080,582.50/401,572.84
  6. Step 6: Final answer
    x = 307,361.62

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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.