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Finding the Fourth Proportional to 343,387.84, 515,059.20 and 118,696

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Solution

The fourth proportional to 343,387.84, 515,059.20 and 118,696 is: 178,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,387.84 : 515,059.20 = 118,696 : x
  2. Step 2: Convert to fraction form
    343,387.84/515,059.20 = 118,696/x
  3. Step 3: Cross multiply
    343,387.84x = 515,059.20 × 118,696
  4. Step 4: Simplify right side
    343,387.84x = 61,135,466,803.20
  5. Step 5: Solve for x
    x = 61,135,466,803.20/343,387.84
  6. Step 6: Final answer
    x = 178,036.20

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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.