Home / 315,530.32-435,185.04-202,363.60

Finding the Fourth Proportional to 315,530.32, 435,185.04 and 202,363.60

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Solution

The fourth proportional to 315,530.32, 435,185.04 and 202,363.60 is: 279,103.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,530.32 : 435,185.04 = 202,363.60 : x
  2. Step 2: Convert to fraction form
    315,530.32/435,185.04 = 202,363.60/x
  3. Step 3: Cross multiply
    315,530.32x = 435,185.04 × 202,363.60
  4. Step 4: Simplify right side
    315,530.32x = 88,065,611,360.54
  5. Step 5: Solve for x
    x = 88,065,611,360.54/315,530.32
  6. Step 6: Final answer
    x = 279,103.48

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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.