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Finding the Fourth Proportional to 403,129.58, 556,304.88 and 221,824.56

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Solution

The fourth proportional to 403,129.58, 556,304.88 and 221,824.56 is: 306,110.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,129.58 : 556,304.88 = 221,824.56 : x
  2. Step 2: Convert to fraction form
    403,129.58/556,304.88 = 221,824.56/x
  3. Step 3: Cross multiply
    403,129.58x = 556,304.88 × 221,824.56
  4. Step 4: Simplify right side
    403,129.58x = 123,402,083,148.98
  5. Step 5: Solve for x
    x = 123,402,083,148.98/403,129.58
  6. Step 6: Final answer
    x = 306,110.22

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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.