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Finding the Fourth Proportional to 343,612.56, 515,295.32 and 118,911.96

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Solution

The fourth proportional to 343,612.56, 515,295.32 and 118,911.96 is: 178,325.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,612.56 : 515,295.32 = 118,911.96 : x
  2. Step 2: Convert to fraction form
    343,612.56/515,295.32 = 118,911.96/x
  3. Step 3: Cross multiply
    343,612.56x = 515,295.32 × 118,911.96
  4. Step 4: Simplify right side
    343,612.56x = 61,274,776,480.03
  5. Step 5: Solve for x
    x = 61,274,776,480.03/343,612.56
  6. Step 6: Final answer
    x = 178,325.19

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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.