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Finding the Fourth Proportional to 343,695.90, 515,673.45 and 166,359.90

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Solution

The fourth proportional to 343,695.90, 515,673.45 and 166,359.90 is: 249,602.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,695.90 : 515,673.45 = 166,359.90 : x
  2. Step 2: Convert to fraction form
    343,695.90/515,673.45 = 166,359.90/x
  3. Step 3: Cross multiply
    343,695.90x = 515,673.45 × 166,359.90
  4. Step 4: Simplify right side
    343,695.90x = 85,787,383,574.66
  5. Step 5: Solve for x
    x = 85,787,383,574.66/343,695.90
  6. Step 6: Final answer
    x = 249,602.58

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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.