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Finding the Fourth Proportional to 364,694.82, 547,286.52 and 128,038.20

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Solution

The fourth proportional to 364,694.82, 547,286.52 and 128,038.20 is: 192,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,694.82 : 547,286.52 = 128,038.20 : x
  2. Step 2: Convert to fraction form
    364,694.82/547,286.52 = 128,038.20/x
  3. Step 3: Cross multiply
    364,694.82x = 547,286.52 × 128,038.20
  4. Step 4: Simplify right side
    364,694.82x = 70,073,580,905.06
  5. Step 5: Solve for x
    x = 70,073,580,905.06/364,694.82
  6. Step 6: Final answer
    x = 192,143.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.