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Finding the Fourth Proportional to 508,634.62, 701,928.30 and 279,214.68

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Solution

The fourth proportional to 508,634.62, 701,928.30 and 279,214.68 is: 385,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,634.62 : 701,928.30 = 279,214.68 : x
  2. Step 2: Convert to fraction form
    508,634.62/701,928.30 = 279,214.68/x
  3. Step 3: Cross multiply
    508,634.62x = 701,928.30 × 279,214.68
  4. Step 4: Simplify right side
    508,634.62x = 195,988,685,667.44
  5. Step 5: Solve for x
    x = 195,988,685,667.44/508,634.62
  6. Step 6: Final answer
    x = 385,323.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.