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Finding the Fourth Proportional to 315,917.60, 473,806.44 and 91,229.12

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Solution

The fourth proportional to 315,917.60, 473,806.44 and 91,229.12 is: 136,823.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,917.60 : 473,806.44 = 91,229.12 : x
  2. Step 2: Convert to fraction form
    315,917.60/473,806.44 = 91,229.12/x
  3. Step 3: Cross multiply
    315,917.60x = 473,806.44 × 91,229.12
  4. Step 4: Simplify right side
    315,917.60x = 43,224,944,571.53
  5. Step 5: Solve for x
    x = 43,224,944,571.53/315,917.60
  6. Step 6: Final answer
    x = 136,823.48

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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.