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Finding the Fourth Proportional to 320,340.70, 442,072.92 and 177,106.78

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Solution

The fourth proportional to 320,340.70, 442,072.92 and 177,106.78 is: 244,408.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,340.70 : 442,072.92 = 177,106.78 : x
  2. Step 2: Convert to fraction form
    320,340.70/442,072.92 = 177,106.78/x
  3. Step 3: Cross multiply
    320,340.70x = 442,072.92 × 177,106.78
  4. Step 4: Simplify right side
    320,340.70x = 78,294,111,386.40
  5. Step 5: Solve for x
    x = 78,294,111,386.40/320,340.70
  6. Step 6: Final answer
    x = 244,408.88

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1.5x scale

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.