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Finding the Fourth Proportional to 423,237.86, 634,844.49 and 123,725.48

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Solution

The fourth proportional to 423,237.86, 634,844.49 and 123,725.48 is: 185,584.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,237.86 : 634,844.49 = 123,725.48 : x
  2. Step 2: Convert to fraction form
    423,237.86/634,844.49 = 123,725.48/x
  3. Step 3: Cross multiply
    423,237.86x = 634,844.49 × 123,725.48
  4. Step 4: Simplify right side
    423,237.86x = 78,546,435,612.41
  5. Step 5: Solve for x
    x = 78,546,435,612.41/423,237.86
  6. Step 6: Final answer
    x = 185,584.62

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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.