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Finding the Fourth Proportional to 385,679.31, 532,267.67 and 222,388.32

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Solution

The fourth proportional to 385,679.31, 532,267.67 and 222,388.32 is: 306,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,679.31 : 532,267.67 = 222,388.32 : x
  2. Step 2: Convert to fraction form
    385,679.31/532,267.67 = 222,388.32/x
  3. Step 3: Cross multiply
    385,679.31x = 532,267.67 × 222,388.32
  4. Step 4: Simplify right side
    385,679.31x = 118,370,112,921.61
  5. Step 5: Solve for x
    x = 118,370,112,921.61/385,679.31
  6. Step 6: Final answer
    x = 306,913.31

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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.