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Finding the Fourth Proportional to 449,714.94, 620,641.89 and 256,130.81

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Solution

The fourth proportional to 449,714.94, 620,641.89 and 256,130.81 is: 353,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,714.94 : 620,641.89 = 256,130.81 : x
  2. Step 2: Convert to fraction form
    449,714.94/620,641.89 = 256,130.81/x
  3. Step 3: Cross multiply
    449,714.94x = 620,641.89 × 256,130.81
  4. Step 4: Simplify right side
    449,714.94x = 158,965,510,005.63
  5. Step 5: Solve for x
    x = 158,965,510,005.63/449,714.94
  6. Step 6: Final answer
    x = 353,480.61

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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.