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Finding the Fourth Proportional to 388,125.64, 582,188.43 and 107,642.89

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Solution

The fourth proportional to 388,125.64, 582,188.43 and 107,642.89 is: 161,464.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,125.64 : 582,188.43 = 107,642.89 : x
  2. Step 2: Convert to fraction form
    388,125.64/582,188.43 = 107,642.89/x
  3. Step 3: Cross multiply
    388,125.64x = 582,188.43 × 107,642.89
  4. Step 4: Simplify right side
    388,125.64x = 62,668,445,129.76
  5. Step 5: Solve for x
    x = 62,668,445,129.76/388,125.64
  6. Step 6: Final answer
    x = 161,464.33

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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.