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Finding the Fourth Proportional to 403,001, 556,141.37 and 221,709.03

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Solution

The fourth proportional to 403,001, 556,141.37 and 221,709.03 is: 305,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,001 : 556,141.37 = 221,709.03 : x
  2. Step 2: Convert to fraction form
    403,001/556,141.37 = 221,709.03/x
  3. Step 3: Cross multiply
    403,001x = 556,141.37 × 221,709.03
  4. Step 4: Simplify right side
    403,001x = 123,301,562,577.03
  5. Step 5: Solve for x
    x = 123,301,562,577.03/403,001
  6. Step 6: Final answer
    x = 305,958.45

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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.