Home / 343,721.20-515,727.60-166,136.80

Finding the Fourth Proportional to 343,721.20, 515,727.60 and 166,136.80

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Solution

The fourth proportional to 343,721.20, 515,727.60 and 166,136.80 is: 249,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,721.20 : 515,727.60 = 166,136.80 : x
  2. Step 2: Convert to fraction form
    343,721.20/515,727.60 = 166,136.80/x
  3. Step 3: Cross multiply
    343,721.20x = 515,727.60 × 166,136.80
  4. Step 4: Simplify right side
    343,721.20x = 85,681,333,135.68
  5. Step 5: Solve for x
    x = 85,681,333,135.68/343,721.20
  6. Step 6: Final answer
    x = 249,275.67

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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.