Home / 283,215.12-390,846.43-154,158.29

Finding the Fourth Proportional to 283,215.12, 390,846.43 and 154,158.29

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Solution

The fourth proportional to 283,215.12, 390,846.43 and 154,158.29 is: 212,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,215.12 : 390,846.43 = 154,158.29 : x
  2. Step 2: Convert to fraction form
    283,215.12/390,846.43 = 154,158.29/x
  3. Step 3: Cross multiply
    283,215.12x = 390,846.43 × 154,158.29
  4. Step 4: Simplify right side
    283,215.12x = 60,252,217,005.54
  5. Step 5: Solve for x
    x = 60,252,217,005.54/283,215.12
  6. Step 6: Final answer
    x = 212,743.65

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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.