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Finding the Fourth Proportional to 423,574.25, 635,220.43 and 170,789.45

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Solution

The fourth proportional to 423,574.25, 635,220.43 and 170,789.45 is: 256,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,574.25 : 635,220.43 = 170,789.45 : x
  2. Step 2: Convert to fraction form
    423,574.25/635,220.43 = 170,789.45/x
  3. Step 3: Cross multiply
    423,574.25x = 635,220.43 × 170,789.45
  4. Step 4: Simplify right side
    423,574.25x = 108,488,944,265.39
  5. Step 5: Solve for x
    x = 108,488,944,265.39/423,574.25
  6. Step 6: Final answer
    x = 256,127.34

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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.