Home / 343,621.22-515,308.32-118,920.65

Finding the Fourth Proportional to 343,621.22, 515,308.32 and 118,920.65

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Solution

The fourth proportional to 343,621.22, 515,308.32 and 118,920.65 is: 178,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,621.22 : 515,308.32 = 118,920.65 : x
  2. Step 2: Convert to fraction form
    343,621.22/515,308.32 = 118,920.65/x
  3. Step 3: Cross multiply
    343,621.22x = 515,308.32 × 118,920.65
  4. Step 4: Simplify right side
    343,621.22x = 61,280,797,788.27
  5. Step 5: Solve for x
    x = 61,280,797,788.27/343,621.22
  6. Step 6: Final answer
    x = 178,338.23

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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.