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Finding the Fourth Proportional to 330,048, 455,466.78 and 179,145

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Solution

The fourth proportional to 330,048, 455,466.78 and 179,145 is: 247,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,048 : 455,466.78 = 179,145 : x
  2. Step 2: Convert to fraction form
    330,048/455,466.78 = 179,145/x
  3. Step 3: Cross multiply
    330,048x = 455,466.78 × 179,145
  4. Step 4: Simplify right side
    330,048x = 81,594,596,303.10
  5. Step 5: Solve for x
    x = 81,594,596,303.10/330,048
  6. Step 6: Final answer
    x = 247,220.39

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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.