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Finding the Fourth Proportional to 351,428.10, 484,960.41 and 198,472.56

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Solution

The fourth proportional to 351,428.10, 484,960.41 and 198,472.56 is: 273,886.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,428.10 : 484,960.41 = 198,472.56 : x
  2. Step 2: Convert to fraction form
    351,428.10/484,960.41 = 198,472.56/x
  3. Step 3: Cross multiply
    351,428.10x = 484,960.41 × 198,472.56
  4. Step 4: Simplify right side
    351,428.10x = 96,251,334,071.35
  5. Step 5: Solve for x
    x = 96,251,334,071.35/351,428.10
  6. Step 6: Final answer
    x = 273,886.28

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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.