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Finding the Fourth Proportional to 449,517.83, 620,356.75 and 255,929.38

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Solution

The fourth proportional to 449,517.83, 620,356.75 and 255,929.38 is: 353,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,517.83 : 620,356.75 = 255,929.38 : x
  2. Step 2: Convert to fraction form
    449,517.83/620,356.75 = 255,929.38/x
  3. Step 3: Cross multiply
    449,517.83x = 620,356.75 × 255,929.38
  4. Step 4: Simplify right side
    449,517.83x = 158,767,516,215.60
  5. Step 5: Solve for x
    x = 158,767,516,215.60/449,517.83
  6. Step 6: Final answer
    x = 353,195.15

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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.