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Finding the Fourth Proportional to 486,797.13, 671,778.32 and 268,999.74

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Solution

The fourth proportional to 486,797.13, 671,778.32 and 268,999.74 is: 371,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,797.13 : 671,778.32 = 268,999.74 : x
  2. Step 2: Convert to fraction form
    486,797.13/671,778.32 = 268,999.74/x
  3. Step 3: Cross multiply
    486,797.13x = 671,778.32 × 268,999.74
  4. Step 4: Simplify right side
    486,797.13x = 180,708,192,072.64
  5. Step 5: Solve for x
    x = 180,708,192,072.64/486,797.13
  6. Step 6: Final answer
    x = 371,218.69

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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.