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Finding the Fourth Proportional to 388,377.76, 582,573.92 and 107,902.30

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Solution

The fourth proportional to 388,377.76, 582,573.92 and 107,902.30 is: 161,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,377.76 : 582,573.92 = 107,902.30 : x
  2. Step 2: Convert to fraction form
    388,377.76/582,573.92 = 107,902.30/x
  3. Step 3: Cross multiply
    388,377.76x = 582,573.92 × 107,902.30
  4. Step 4: Simplify right side
    388,377.76x = 62,861,065,888.02
  5. Step 5: Solve for x
    x = 62,861,065,888.02/388,377.76
  6. Step 6: Final answer
    x = 161,855.47

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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.