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Finding the Fourth Proportional to 423,657.49, 635,485.70 and 108,114.39

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Solution

The fourth proportional to 423,657.49, 635,485.70 and 108,114.39 is: 162,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,657.49 : 635,485.70 = 108,114.39 : x
  2. Step 2: Convert to fraction form
    423,657.49/635,485.70 = 108,114.39/x
  3. Step 3: Cross multiply
    423,657.49x = 635,485.70 × 108,114.39
  4. Step 4: Simplify right side
    423,657.49x = 68,705,148,268.65
  5. Step 5: Solve for x
    x = 68,705,148,268.65/423,657.49
  6. Step 6: Final answer
    x = 162,171.45

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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.