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Finding the Fourth Proportional to 423,507.26, 635,269.08 and 103,661.93

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Solution

The fourth proportional to 423,507.26, 635,269.08 and 103,661.93 is: 155,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,507.26 : 635,269.08 = 103,661.93 : x
  2. Step 2: Convert to fraction form
    423,507.26/635,269.08 = 103,661.93/x
  3. Step 3: Cross multiply
    423,507.26x = 635,269.08 × 103,661.93
  4. Step 4: Simplify right side
    423,507.26x = 65,853,218,902.12
  5. Step 5: Solve for x
    x = 65,853,218,902.12/423,507.26
  6. Step 6: Final answer
    x = 155,494.90

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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.