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Finding the Fourth Proportional to 343,304.70, 515,102.85 and 165,720.30

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Solution

The fourth proportional to 343,304.70, 515,102.85 and 165,720.30 is: 248,650.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,304.70 : 515,102.85 = 165,720.30 : x
  2. Step 2: Convert to fraction form
    343,304.70/515,102.85 = 165,720.30/x
  3. Step 3: Cross multiply
    343,304.70x = 515,102.85 × 165,720.30
  4. Step 4: Simplify right side
    343,304.70x = 85,362,998,832.86
  5. Step 5: Solve for x
    x = 85,362,998,832.86/343,304.70
  6. Step 6: Final answer
    x = 248,650.83

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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.