Home / 283,288.92-390,940.20-155,964.60

Finding the Fourth Proportional to 283,288.92, 390,940.20 and 155,964.60

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Solution

The fourth proportional to 283,288.92, 390,940.20 and 155,964.60 is: 215,231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,288.92 : 390,940.20 = 155,964.60 : x
  2. Step 2: Convert to fraction form
    283,288.92/390,940.20 = 155,964.60/x
  3. Step 3: Cross multiply
    283,288.92x = 390,940.20 × 155,964.60
  4. Step 4: Simplify right side
    283,288.92x = 60,972,831,916.92
  5. Step 5: Solve for x
    x = 60,972,831,916.92/283,288.92
  6. Step 6: Final answer
    x = 215,231.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.