Home / 378,731.64-522,660.59-208,976.70

Finding the Fourth Proportional to 378,731.64, 522,660.59 and 208,976.70

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Solution

The fourth proportional to 378,731.64, 522,660.59 and 208,976.70 is: 288,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,731.64 : 522,660.59 = 208,976.70 : x
  2. Step 2: Convert to fraction form
    378,731.64/522,660.59 = 208,976.70/x
  3. Step 3: Cross multiply
    378,731.64x = 522,660.59 × 208,976.70
  4. Step 4: Simplify right side
    378,731.64x = 109,223,884,370.61
  5. Step 5: Solve for x
    x = 109,223,884,370.61/378,731.64
  6. Step 6: Final answer
    x = 288,393.88

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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.