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Finding the Fourth Proportional to 392,599.31, 587,736.43 and 242,356.51

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Solution

The fourth proportional to 392,599.31, 587,736.43 and 242,356.51 is: 362,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,599.31 : 587,736.43 = 242,356.51 : x
  2. Step 2: Convert to fraction form
    392,599.31/587,736.43 = 242,356.51/x
  3. Step 3: Cross multiply
    392,599.31x = 587,736.43 × 242,356.51
  4. Step 4: Simplify right side
    392,599.31x = 142,441,747,479.05
  5. Step 5: Solve for x
    x = 142,441,747,479.05/392,599.31
  6. Step 6: Final answer
    x = 362,817.12

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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.