Home / 343,621.20-515,308.32-118,920.66

Finding the Fourth Proportional to 343,621.20, 515,308.32 and 118,920.66

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Solution

The fourth proportional to 343,621.20, 515,308.32 and 118,920.66 is: 178,338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,621.20 : 515,308.32 = 118,920.66 : x
  2. Step 2: Convert to fraction form
    343,621.20/515,308.32 = 118,920.66/x
  3. Step 3: Cross multiply
    343,621.20x = 515,308.32 × 118,920.66
  4. Step 4: Simplify right side
    343,621.20x = 61,280,805,517.89
  5. Step 5: Solve for x
    x = 61,280,805,517.89/343,621.20
  6. Step 6: Final answer
    x = 178,338.26

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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.