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Finding the Fourth Proportional to 388,373.76, 582,560.40 and 222,045.12

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Solution

The fourth proportional to 388,373.76, 582,560.40 and 222,045.12 is: 333,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,373.76 : 582,560.40 = 222,045.12 : x
  2. Step 2: Convert to fraction form
    388,373.76/582,560.40 = 222,045.12/x
  3. Step 3: Cross multiply
    388,373.76x = 582,560.40 × 222,045.12
  4. Step 4: Simplify right side
    388,373.76x = 129,354,693,925.25
  5. Step 5: Solve for x
    x = 129,354,693,925.25/388,373.76
  6. Step 6: Final answer
    x = 333,067.54

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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.