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Finding the Fourth Proportional to 423,894.32, 635,939.96 and 124,362.80

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Solution

The fourth proportional to 423,894.32, 635,939.96 and 124,362.80 is: 186,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,894.32 : 635,939.96 = 124,362.80 : x
  2. Step 2: Convert to fraction form
    423,894.32/635,939.96 = 124,362.80/x
  3. Step 3: Cross multiply
    423,894.32x = 635,939.96 × 124,362.80
  4. Step 4: Simplify right side
    423,894.32x = 79,087,274,057.49
  5. Step 5: Solve for x
    x = 79,087,274,057.49/423,894.32
  6. Step 6: Final answer
    x = 186,573.09

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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.