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Finding the Fourth Proportional to 388,728.14, 583,092.21 and 222,399.50

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Solution

The fourth proportional to 388,728.14, 583,092.21 and 222,399.50 is: 333,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,728.14 : 583,092.21 = 222,399.50 : x
  2. Step 2: Convert to fraction form
    388,728.14/583,092.21 = 222,399.50/x
  3. Step 3: Cross multiply
    388,728.14x = 583,092.21 × 222,399.50
  4. Step 4: Simplify right side
    388,728.14x = 129,679,415,957.90
  5. Step 5: Solve for x
    x = 129,679,415,957.90/388,728.14
  6. Step 6: Final answer
    x = 333,599.25

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Similar ratio
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1.5x scale

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.