Home / 283,140.82-390,734.39-155,816.42

Finding the Fourth Proportional to 283,140.82, 390,734.39 and 155,816.42

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Solution

The fourth proportional to 283,140.82, 390,734.39 and 155,816.42 is: 215,026.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,140.82 : 390,734.39 = 155,816.42 : x
  2. Step 2: Convert to fraction form
    283,140.82/390,734.39 = 155,816.42/x
  3. Step 3: Cross multiply
    283,140.82x = 390,734.39 × 155,816.42
  4. Step 4: Simplify right side
    283,140.82x = 60,882,831,867.01
  5. Step 5: Solve for x
    x = 60,882,831,867.01/283,140.82
  6. Step 6: Final answer
    x = 215,026.68

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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.