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Finding the Fourth Proportional to 315,476.55, 435,407.61 and 200,635.46

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Solution

The fourth proportional to 315,476.55, 435,407.61 and 200,635.46 is: 276,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,476.55 : 435,407.61 = 200,635.46 : x
  2. Step 2: Convert to fraction form
    315,476.55/435,407.61 = 200,635.46/x
  3. Step 3: Cross multiply
    315,476.55x = 435,407.61 × 200,635.46
  4. Step 4: Simplify right side
    315,476.55x = 87,358,203,942.81
  5. Step 5: Solve for x
    x = 87,358,203,942.81/315,476.55
  6. Step 6: Final answer
    x = 276,908.71

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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.