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Finding the Fourth Proportional to 345,356.17, 518,104.33 and 108,643.80

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Solution

The fourth proportional to 345,356.17, 518,104.33 and 108,643.80 is: 162,987.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,356.17 : 518,104.33 = 108,643.80 : x
  2. Step 2: Convert to fraction form
    345,356.17/518,104.33 = 108,643.80/x
  3. Step 3: Cross multiply
    345,356.17x = 518,104.33 × 108,643.80
  4. Step 4: Simplify right side
    345,356.17x = 56,288,823,207.65
  5. Step 5: Solve for x
    x = 56,288,823,207.65/345,356.17
  6. Step 6: Final answer
    x = 162,987.74

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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.