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Finding the Fourth Proportional to 343,764.90, 515,647.35 and 343,764.90

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Solution

The fourth proportional to 343,764.90, 515,647.35 and 343,764.90 is: 515,647.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,764.90 : 515,647.35 = 343,764.90 : x
  2. Step 2: Convert to fraction form
    343,764.90/515,647.35 = 343,764.90/x
  3. Step 3: Cross multiply
    343,764.90x = 515,647.35 × 343,764.90
  4. Step 4: Simplify right side
    343,764.90x = 177,261,459,708.02
  5. Step 5: Solve for x
    x = 177,261,459,708.02/343,764.90
  6. Step 6: Final answer
    x = 515,647.35

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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.