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Finding the Fourth Proportional to 345,449.81, 518,103.26 and 92,670.37

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Solution

The fourth proportional to 345,449.81, 518,103.26 and 92,670.37 is: 138,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,449.81 : 518,103.26 = 92,670.37 : x
  2. Step 2: Convert to fraction form
    345,449.81/518,103.26 = 92,670.37/x
  3. Step 3: Cross multiply
    345,449.81x = 518,103.26 × 92,670.37
  4. Step 4: Simplify right side
    345,449.81x = 48,012,818,923.36
  5. Step 5: Solve for x
    x = 48,012,818,923.36/345,449.81
  6. Step 6: Final answer
    x = 138,986.38

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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.