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Finding the Fourth Proportional to 388,672.89, 583,009.34 and 222,344.25

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Solution

The fourth proportional to 388,672.89, 583,009.34 and 222,344.25 is: 333,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,672.89 : 583,009.34 = 222,344.25 : x
  2. Step 2: Convert to fraction form
    388,672.89/583,009.34 = 222,344.25/x
  3. Step 3: Cross multiply
    388,672.89x = 583,009.34 × 222,344.25
  4. Step 4: Simplify right side
    388,672.89x = 129,628,774,445.30
  5. Step 5: Solve for x
    x = 129,628,774,445.30/388,672.89
  6. Step 6: Final answer
    x = 333,516.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.