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Finding the Fourth Proportional to 401,491, 554,057.58 and 222,643

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Solution

The fourth proportional to 401,491, 554,057.58 and 222,643 is: 307,247.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,491 : 554,057.58 = 222,643 : x
  2. Step 2: Convert to fraction form
    401,491/554,057.58 = 222,643/x
  3. Step 3: Cross multiply
    401,491x = 554,057.58 × 222,643
  4. Step 4: Simplify right side
    401,491x = 123,357,041,783.94
  5. Step 5: Solve for x
    x = 123,357,041,783.94/401,491
  6. Step 6: Final answer
    x = 307,247.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.