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Finding the Fourth Proportional to 203,274.52, 304,854.16 and 128,282.32

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Solution

The fourth proportional to 203,274.52, 304,854.16 and 128,282.32 is: 192,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,274.52 : 304,854.16 = 128,282.32 : x
  2. Step 2: Convert to fraction form
    203,274.52/304,854.16 = 128,282.32/x
  3. Step 3: Cross multiply
    203,274.52x = 304,854.16 × 128,282.32
  4. Step 4: Simplify right side
    203,274.52x = 39,107,398,906.45
  5. Step 5: Solve for x
    x = 39,107,398,906.45/203,274.52
  6. Step 6: Final answer
    x = 192,387.12

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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.