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Finding the Fourth Proportional to 439,992, 607,188.96 and 238,788

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Solution

The fourth proportional to 439,992, 607,188.96 and 238,788 is: 329,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,992 : 607,188.96 = 238,788 : x
  2. Step 2: Convert to fraction form
    439,992/607,188.96 = 238,788/x
  3. Step 3: Cross multiply
    439,992x = 607,188.96 × 238,788
  4. Step 4: Simplify right side
    439,992x = 144,989,437,380.48
  5. Step 5: Solve for x
    x = 144,989,437,380.48/439,992
  6. Step 6: Final answer
    x = 329,527.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.