Home / 307,943.40-461,819.10-121,012.20

Finding the Fourth Proportional to 307,943.40, 461,819.10 and 121,012.20

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Solution

The fourth proportional to 307,943.40, 461,819.10 and 121,012.20 is: 181,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,943.40 : 461,819.10 = 121,012.20 : x
  2. Step 2: Convert to fraction form
    307,943.40/461,819.10 = 121,012.20/x
  3. Step 3: Cross multiply
    307,943.40x = 461,819.10 × 121,012.20
  4. Step 4: Simplify right side
    307,943.40x = 55,885,745,293.02
  5. Step 5: Solve for x
    x = 55,885,745,293.02/307,943.40
  6. Step 6: Final answer
    x = 181,480.57

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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.