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Finding the Fourth Proportional to 315,733.72, 473,600.60 and 128,759.80

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Solution

The fourth proportional to 315,733.72, 473,600.60 and 128,759.80 is: 193,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,733.72 : 473,600.60 = 128,759.80 : x
  2. Step 2: Convert to fraction form
    315,733.72/473,600.60 = 128,759.80/x
  3. Step 3: Cross multiply
    315,733.72x = 473,600.60 × 128,759.80
  4. Step 4: Simplify right side
    315,733.72x = 60,980,718,535.88
  5. Step 5: Solve for x
    x = 60,980,718,535.88/315,733.72
  6. Step 6: Final answer
    x = 193,139.71

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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.