Home / 279,239.72-385,338.66-155,052.96

Finding the Fourth Proportional to 279,239.72, 385,338.66 and 155,052.96

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Solution

The fourth proportional to 279,239.72, 385,338.66 and 155,052.96 is: 213,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,239.72 : 385,338.66 = 155,052.96 : x
  2. Step 2: Convert to fraction form
    279,239.72/385,338.66 = 155,052.96/x
  3. Step 3: Cross multiply
    279,239.72x = 385,338.66 × 155,052.96
  4. Step 4: Simplify right side
    279,239.72x = 59,747,899,835.43
  5. Step 5: Solve for x
    x = 59,747,899,835.43/279,239.72
  6. Step 6: Final answer
    x = 213,966.34

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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.