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Finding the Fourth Proportional to 423,825.01, 635,779.50 and 135,564.23

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Solution

The fourth proportional to 423,825.01, 635,779.50 and 135,564.23 is: 203,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,825.01 : 635,779.50 = 135,564.23 : x
  2. Step 2: Convert to fraction form
    423,825.01/635,779.50 = 135,564.23/x
  3. Step 3: Cross multiply
    423,825.01x = 635,779.50 × 135,564.23
  4. Step 4: Simplify right side
    423,825.01x = 86,188,957,689.46
  5. Step 5: Solve for x
    x = 86,188,957,689.46/423,825.01
  6. Step 6: Final answer
    x = 203,359.78

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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.