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Finding the Fourth Proportional to 423,301.71, 635,012.10 and 123,804.75

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Solution

The fourth proportional to 423,301.71, 635,012.10 and 123,804.75 is: 185,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,301.71 : 635,012.10 = 123,804.75 : x
  2. Step 2: Convert to fraction form
    423,301.71/635,012.10 = 123,804.75/x
  3. Step 3: Cross multiply
    423,301.71x = 635,012.10 × 123,804.75
  4. Step 4: Simplify right side
    423,301.71x = 78,617,514,287.48
  5. Step 5: Solve for x
    x = 78,617,514,287.48/423,301.71
  6. Step 6: Final answer
    x = 185,724.54

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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.