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Finding the Fourth Proportional to 403,019.17, 556,166.42 and 221,727.20

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Solution

The fourth proportional to 403,019.17, 556,166.42 and 221,727.20 is: 305,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,019.17 : 556,166.42 = 221,727.20 : x
  2. Step 2: Convert to fraction form
    403,019.17/556,166.42 = 221,727.20/x
  3. Step 3: Cross multiply
    403,019.17x = 556,166.42 × 221,727.20
  4. Step 4: Simplify right side
    403,019.17x = 123,317,224,985.36
  5. Step 5: Solve for x
    x = 123,317,224,985.36/403,019.17
  6. Step 6: Final answer
    x = 305,983.52

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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.