Home / 339,904.80-509,533.20-126,615.60

Finding the Fourth Proportional to 339,904.80, 509,533.20 and 126,615.60

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Solution

The fourth proportional to 339,904.80, 509,533.20 and 126,615.60 is: 189,802.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,904.80 : 509,533.20 = 126,615.60 : x
  2. Step 2: Convert to fraction form
    339,904.80/509,533.20 = 126,615.60/x
  3. Step 3: Cross multiply
    339,904.80x = 509,533.20 × 126,615.60
  4. Step 4: Simplify right side
    339,904.80x = 64,514,851,837.92
  5. Step 5: Solve for x
    x = 64,514,851,837.92/339,904.80
  6. Step 6: Final answer
    x = 189,802.71

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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.