Home / 307,421.20-461,196.60-129,836.80

Finding the Fourth Proportional to 307,421.20, 461,196.60 and 129,836.80

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Solution

The fourth proportional to 307,421.20, 461,196.60 and 129,836.80 is: 194,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,421.20 : 461,196.60 = 129,836.80 : x
  2. Step 2: Convert to fraction form
    307,421.20/461,196.60 = 129,836.80/x
  3. Step 3: Cross multiply
    307,421.20x = 461,196.60 × 129,836.80
  4. Step 4: Simplify right side
    307,421.20x = 59,880,290,714.88
  5. Step 5: Solve for x
    x = 59,880,290,714.88/307,421.20
  6. Step 6: Final answer
    x = 194,782.57

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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.