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Finding the Fourth Proportional to 449,363.72, 620,126.13 and 255,761.94

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Solution

The fourth proportional to 449,363.72, 620,126.13 and 255,761.94 is: 352,953.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,363.72 : 620,126.13 = 255,761.94 : x
  2. Step 2: Convert to fraction form
    449,363.72/620,126.13 = 255,761.94/x
  3. Step 3: Cross multiply
    449,363.72x = 620,126.13 × 255,761.94
  4. Step 4: Simplify right side
    449,363.72x = 158,604,662,053.49
  5. Step 5: Solve for x
    x = 158,604,662,053.49/449,363.72
  6. Step 6: Final answer
    x = 352,953.87

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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.