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Finding the Fourth Proportional to 345,132.90, 517,716.90 and 108,477.90

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Solution

The fourth proportional to 345,132.90, 517,716.90 and 108,477.90 is: 162,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,132.90 : 517,716.90 = 108,477.90 : x
  2. Step 2: Convert to fraction form
    345,132.90/517,716.90 = 108,477.90/x
  3. Step 3: Cross multiply
    345,132.90x = 517,716.90 × 108,477.90
  4. Step 4: Simplify right side
    345,132.90x = 56,160,842,106.51
  5. Step 5: Solve for x
    x = 56,160,842,106.51/345,132.90
  6. Step 6: Final answer
    x = 162,722.37

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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.