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Finding the Fourth Proportional to 315,363.20, 435,211.32 and 179,393.60

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Solution

The fourth proportional to 315,363.20, 435,211.32 and 179,393.60 is: 247,568.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,363.20 : 435,211.32 = 179,393.60 : x
  2. Step 2: Convert to fraction form
    315,363.20/435,211.32 = 179,393.60/x
  3. Step 3: Cross multiply
    315,363.20x = 435,211.32 × 179,393.60
  4. Step 4: Simplify right side
    315,363.20x = 78,074,125,455.55
  5. Step 5: Solve for x
    x = 78,074,125,455.55/315,363.20
  6. Step 6: Final answer
    x = 247,568.92

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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.