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Finding the Fourth Proportional to 343,744.31, 515,630.45 and 163,737.20

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Solution

The fourth proportional to 343,744.31, 515,630.45 and 163,737.20 is: 245,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,744.31 : 515,630.45 = 163,737.20 : x
  2. Step 2: Convert to fraction form
    343,744.31/515,630.45 = 163,737.20/x
  3. Step 3: Cross multiply
    343,744.31x = 515,630.45 × 163,737.20
  4. Step 4: Simplify right side
    343,744.31x = 84,427,887,816.16
  5. Step 5: Solve for x
    x = 84,427,887,816.16/343,744.31
  6. Step 6: Final answer
    x = 245,612.46

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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.