Home / 283,205.34-390,834.45-155,892.78

Finding the Fourth Proportional to 283,205.34, 390,834.45 and 155,892.78

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Solution

The fourth proportional to 283,205.34, 390,834.45 and 155,892.78 is: 215,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,205.34 : 390,834.45 = 155,892.78 : x
  2. Step 2: Convert to fraction form
    283,205.34/390,834.45 = 155,892.78/x
  3. Step 3: Cross multiply
    283,205.34x = 390,834.45 × 155,892.78
  4. Step 4: Simplify right side
    283,205.34x = 60,928,268,930.27
  5. Step 5: Solve for x
    x = 60,928,268,930.27/283,205.34
  6. Step 6: Final answer
    x = 215,138.14

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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.