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Finding the Fourth Proportional to 438,908.41, 605,451.10 and 357,324.43

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Solution

The fourth proportional to 438,908.41, 605,451.10 and 357,324.43 is: 492,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,908.41 : 605,451.10 = 357,324.43 : x
  2. Step 2: Convert to fraction form
    438,908.41/605,451.10 = 357,324.43/x
  3. Step 3: Cross multiply
    438,908.41x = 605,451.10 × 357,324.43
  4. Step 4: Simplify right side
    438,908.41x = 216,342,465,890.83
  5. Step 5: Solve for x
    x = 216,342,465,890.83/438,908.41
  6. Step 6: Final answer
    x = 492,910.28

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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.