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Finding the Fourth Proportional to 315,415.05, 435,257.59 and 179,436.25

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Solution

The fourth proportional to 315,415.05, 435,257.59 and 179,436.25 is: 247,613.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,415.05 : 435,257.59 = 179,436.25 : x
  2. Step 2: Convert to fraction form
    315,415.05/435,257.59 = 179,436.25/x
  3. Step 3: Cross multiply
    315,415.05x = 435,257.59 × 179,436.25
  4. Step 4: Simplify right side
    315,415.05x = 78,100,989,733.64
  5. Step 5: Solve for x
    x = 78,100,989,733.64/315,415.05
  6. Step 6: Final answer
    x = 247,613.39

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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.