Home / 283,198.72-390,811.18-155,871.56

Finding the Fourth Proportional to 283,198.72, 390,811.18 and 155,871.56

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Solution

The fourth proportional to 283,198.72, 390,811.18 and 155,871.56 is: 215,101.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,198.72 : 390,811.18 = 155,871.56 : x
  2. Step 2: Convert to fraction form
    283,198.72/390,811.18 = 155,871.56/x
  3. Step 3: Cross multiply
    283,198.72x = 390,811.18 × 155,871.56
  4. Step 4: Simplify right side
    283,198.72x = 60,916,348,292.04
  5. Step 5: Solve for x
    x = 60,916,348,292.04/283,198.72
  6. Step 6: Final answer
    x = 215,101.07

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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.