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Finding the Fourth Proportional to 403,004.96, 556,146.84 and 221,713.01

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Solution

The fourth proportional to 403,004.96, 556,146.84 and 221,713.01 is: 305,963.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,004.96 : 556,146.84 = 221,713.01 : x
  2. Step 2: Convert to fraction form
    403,004.96/556,146.84 = 221,713.01/x
  3. Step 3: Cross multiply
    403,004.96x = 556,146.84 × 221,713.01
  4. Step 4: Simplify right side
    403,004.96x = 123,304,989,898.39
  5. Step 5: Solve for x
    x = 123,304,989,898.39/403,004.96
  6. Step 6: Final answer
    x = 305,963.95

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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.