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Finding the Fourth Proportional to 360,628.80, 540,785.39 and 171,143.47

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Solution

The fourth proportional to 360,628.80, 540,785.39 and 171,143.47 is: 256,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,628.80 : 540,785.39 = 171,143.47 : x
  2. Step 2: Convert to fraction form
    360,628.80/540,785.39 = 171,143.47/x
  3. Step 3: Cross multiply
    360,628.80x = 540,785.39 × 171,143.47
  4. Step 4: Simplify right side
    360,628.80x = 92,551,888,169.90
  5. Step 5: Solve for x
    x = 92,551,888,169.90/360,628.80
  6. Step 6: Final answer
    x = 256,640.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.