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Finding the Fourth Proportional to 330,300.78, 455,817.36 and 179,397.78

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Solution

The fourth proportional to 330,300.78, 455,817.36 and 179,397.78 is: 247,570.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,300.78 : 455,817.36 = 179,397.78 : x
  2. Step 2: Convert to fraction form
    330,300.78/455,817.36 = 179,397.78/x
  3. Step 3: Cross multiply
    330,300.78x = 455,817.36 × 179,397.78
  4. Step 4: Simplify right side
    330,300.78x = 81,772,622,469.46
  5. Step 5: Solve for x
    x = 81,772,622,469.46/330,300.78
  6. Step 6: Final answer
    x = 247,570.18

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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.