Home / 385,431.68-531,882.37-213,357.15

Finding the Fourth Proportional to 385,431.68, 531,882.37 and 213,357.15

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Solution

The fourth proportional to 385,431.68, 531,882.37 and 213,357.15 is: 294,425.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,431.68 : 531,882.37 = 213,357.15 : x
  2. Step 2: Convert to fraction form
    385,431.68/531,882.37 = 213,357.15/x
  3. Step 3: Cross multiply
    385,431.68x = 531,882.37 × 213,357.15
  4. Step 4: Simplify right side
    385,431.68x = 113,480,902,872.25
  5. Step 5: Solve for x
    x = 113,480,902,872.25/385,431.68
  6. Step 6: Final answer
    x = 294,425.47

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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.