Home / 307,947.90-461,921.85-256,107.90

Finding the Fourth Proportional to 307,947.90, 461,921.85 and 256,107.90

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Solution

The fourth proportional to 307,947.90, 461,921.85 and 256,107.90 is: 384,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,947.90 : 461,921.85 = 256,107.90 : x
  2. Step 2: Convert to fraction form
    307,947.90/461,921.85 = 256,107.90/x
  3. Step 3: Cross multiply
    307,947.90x = 461,921.85 × 256,107.90
  4. Step 4: Simplify right side
    307,947.90x = 118,301,834,967.62
  5. Step 5: Solve for x
    x = 118,301,834,967.62/307,947.90
  6. Step 6: Final answer
    x = 384,161.85

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Similar ratio
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1.5x scale

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.