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Finding the Fourth Proportional to 385,496.74, 532,041.17 and 222,121.97

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Solution

The fourth proportional to 385,496.74, 532,041.17 and 222,121.97 is: 306,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,496.74 : 532,041.17 = 222,121.97 : x
  2. Step 2: Convert to fraction form
    385,496.74/532,041.17 = 222,121.97/x
  3. Step 3: Cross multiply
    385,496.74x = 532,041.17 × 222,121.97
  4. Step 4: Simplify right side
    385,496.74x = 118,178,032,801.51
  5. Step 5: Solve for x
    x = 118,178,032,801.51/385,496.74
  6. Step 6: Final answer
    x = 306,560.39

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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.