Home / 307,900.20-461,915.10-130,315.80

Finding the Fourth Proportional to 307,900.20, 461,915.10 and 130,315.80

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Solution

The fourth proportional to 307,900.20, 461,915.10 and 130,315.80 is: 195,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,900.20 : 461,915.10 = 130,315.80 : x
  2. Step 2: Convert to fraction form
    307,900.20/461,915.10 = 130,315.80/x
  3. Step 3: Cross multiply
    307,900.20x = 461,915.10 × 130,315.80
  4. Step 4: Simplify right side
    307,900.20x = 60,194,835,788.58
  5. Step 5: Solve for x
    x = 60,194,835,788.58/307,900.20
  6. Step 6: Final answer
    x = 195,501.13

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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.