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Finding the Fourth Proportional to 343,812.83, 515,602.46 and 119,120.83

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Solution

The fourth proportional to 343,812.83, 515,602.46 and 119,120.83 is: 178,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,812.83 : 515,602.46 = 119,120.83 : x
  2. Step 2: Convert to fraction form
    343,812.83/515,602.46 = 119,120.83/x
  3. Step 3: Cross multiply
    343,812.83x = 515,602.46 × 119,120.83
  4. Step 4: Simplify right side
    343,812.83x = 61,418,991,994.04
  5. Step 5: Solve for x
    x = 61,418,991,994.04/343,812.83
  6. Step 6: Final answer
    x = 178,640.78

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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.