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Finding the Fourth Proportional to 388,672.58, 583,008.87 and 222,343.94

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Solution

The fourth proportional to 388,672.58, 583,008.87 and 222,343.94 is: 333,515.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,672.58 : 583,008.87 = 222,343.94 : x
  2. Step 2: Convert to fraction form
    388,672.58/583,008.87 = 222,343.94/x
  3. Step 3: Cross multiply
    388,672.58x = 583,008.87 × 222,343.94
  4. Step 4: Simplify right side
    388,672.58x = 129,628,487,197.37
  5. Step 5: Solve for x
    x = 129,628,487,197.37/388,672.58
  6. Step 6: Final answer
    x = 333,515.91

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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.