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Finding the Fourth Proportional to 345,859.74, 518,776.65 and 109,216.62

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Solution

The fourth proportional to 345,859.74, 518,776.65 and 109,216.62 is: 163,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,859.74 : 518,776.65 = 109,216.62 : x
  2. Step 2: Convert to fraction form
    345,859.74/518,776.65 = 109,216.62/x
  3. Step 3: Cross multiply
    345,859.74x = 518,776.65 × 109,216.62
  4. Step 4: Simplify right side
    345,859.74x = 56,659,032,247.92
  5. Step 5: Solve for x
    x = 56,659,032,247.92/345,859.74
  6. Step 6: Final answer
    x = 163,820.84

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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.