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Finding the Fourth Proportional to 281,907.76, 388,656.37 and 223,956.79

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Solution

The fourth proportional to 281,907.76, 388,656.37 and 223,956.79 is: 308,761.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,907.76 : 388,656.37 = 223,956.79 : x
  2. Step 2: Convert to fraction form
    281,907.76/388,656.37 = 223,956.79/x
  3. Step 3: Cross multiply
    281,907.76x = 388,656.37 × 223,956.79
  4. Step 4: Simplify right side
    281,907.76x = 87,042,233,038.25
  5. Step 5: Solve for x
    x = 87,042,233,038.25/281,907.76
  6. Step 6: Final answer
    x = 308,761.39

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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.