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Finding the Fourth Proportional to 343,851.52, 515,936 and 156,920.32

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Solution

The fourth proportional to 343,851.52, 515,936 and 156,920.32 is: 235,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,851.52 : 515,936 = 156,920.32 : x
  2. Step 2: Convert to fraction form
    343,851.52/515,936 = 156,920.32/x
  3. Step 3: Cross multiply
    343,851.52x = 515,936 × 156,920.32
  4. Step 4: Simplify right side
    343,851.52x = 80,960,842,219.52
  5. Step 5: Solve for x
    x = 80,960,842,219.52/343,851.52
  6. Step 6: Final answer
    x = 235,452.91

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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.