Home / 307,912.40-461,772.60-120,981.20

Finding the Fourth Proportional to 307,912.40, 461,772.60 and 120,981.20

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Solution

The fourth proportional to 307,912.40, 461,772.60 and 120,981.20 is: 181,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,912.40 : 461,772.60 = 120,981.20 : x
  2. Step 2: Convert to fraction form
    307,912.40/461,772.60 = 120,981.20/x
  3. Step 3: Cross multiply
    307,912.40x = 461,772.60 × 120,981.20
  4. Step 4: Simplify right side
    307,912.40x = 55,865,803,275.12
  5. Step 5: Solve for x
    x = 55,865,803,275.12/307,912.40
  6. Step 6: Final answer
    x = 181,434.08

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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.