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Finding the Fourth Proportional to 201,630.40, 278,217.40 and 115,573.56

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Solution

The fourth proportional to 201,630.40, 278,217.40 and 115,573.56 is: 159,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,630.40 : 278,217.40 = 115,573.56 : x
  2. Step 2: Convert to fraction form
    201,630.40/278,217.40 = 115,573.56/x
  3. Step 3: Cross multiply
    201,630.40x = 278,217.40 × 115,573.56
  4. Step 4: Simplify right side
    201,630.40x = 32,154,575,371.94
  5. Step 5: Solve for x
    x = 32,154,575,371.94/201,630.40
  6. Step 6: Final answer
    x = 159,472.85

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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.