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Finding the Fourth Proportional to 315,172.75, 434,920.74 and 179,187.52

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Solution

The fourth proportional to 315,172.75, 434,920.74 and 179,187.52 is: 247,268.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,172.75 : 434,920.74 = 179,187.52 : x
  2. Step 2: Convert to fraction form
    315,172.75/434,920.74 = 179,187.52/x
  3. Step 3: Cross multiply
    315,172.75x = 434,920.74 × 179,187.52
  4. Step 4: Simplify right side
    315,172.75x = 77,932,368,797.16
  5. Step 5: Solve for x
    x = 77,932,368,797.16/315,172.75
  6. Step 6: Final answer
    x = 247,268.74

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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.