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Finding the Fourth Proportional to 320,574.80, 442,395.03 and 177,339.97

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Solution

The fourth proportional to 320,574.80, 442,395.03 and 177,339.97 is: 244,730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,574.80 : 442,395.03 = 177,339.97 : x
  2. Step 2: Convert to fraction form
    320,574.80/442,395.03 = 177,339.97/x
  3. Step 3: Cross multiply
    320,574.80x = 442,395.03 × 177,339.97
  4. Step 4: Simplify right side
    320,574.80x = 78,454,321,348.35
  5. Step 5: Solve for x
    x = 78,454,321,348.35/320,574.80
  6. Step 6: Final answer
    x = 244,730.16

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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.