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Finding the Fourth Proportional to 423,513.39, 635,100.53 and 186,687.75

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Solution

The fourth proportional to 423,513.39, 635,100.53 and 186,687.75 is: 279,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,513.39 : 635,100.53 = 186,687.75 : x
  2. Step 2: Convert to fraction form
    423,513.39/635,100.53 = 186,687.75/x
  3. Step 3: Cross multiply
    423,513.39x = 635,100.53 × 186,687.75
  4. Step 4: Simplify right side
    423,513.39x = 118,565,488,036.07
  5. Step 5: Solve for x
    x = 118,565,488,036.07/423,513.39
  6. Step 6: Final answer
    x = 279,956.88

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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.