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Finding the Fourth Proportional to 343,742.40, 515,662.20 and 107,060.40

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Solution

The fourth proportional to 343,742.40, 515,662.20 and 107,060.40 is: 160,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,742.40 : 515,662.20 = 107,060.40 : x
  2. Step 2: Convert to fraction form
    343,742.40/515,662.20 = 107,060.40/x
  3. Step 3: Cross multiply
    343,742.40x = 515,662.20 × 107,060.40
  4. Step 4: Simplify right side
    343,742.40x = 55,207,001,396.88
  5. Step 5: Solve for x
    x = 55,207,001,396.88/343,742.40
  6. Step 6: Final answer
    x = 160,605.74

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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.