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Finding the Fourth Proportional to 343,640.40, 515,590.20 and 166,304.40

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Solution

The fourth proportional to 343,640.40, 515,590.20 and 166,304.40 is: 249,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,640.40 : 515,590.20 = 166,304.40 : x
  2. Step 2: Convert to fraction form
    343,640.40/515,590.20 = 166,304.40/x
  3. Step 3: Cross multiply
    343,640.40x = 515,590.20 × 166,304.40
  4. Step 4: Simplify right side
    343,640.40x = 85,744,918,856.88
  5. Step 5: Solve for x
    x = 85,744,918,856.88/343,640.40
  6. Step 6: Final answer
    x = 249,519.32

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1.5x scale

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.