Home / 385,379.13-531,837.60-215,614.47

Finding the Fourth Proportional to 385,379.13, 531,837.60 and 215,614.47

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Solution

The fourth proportional to 385,379.13, 531,837.60 and 215,614.47 is: 297,556.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,379.13 : 531,837.60 = 215,614.47 : x
  2. Step 2: Convert to fraction form
    385,379.13/531,837.60 = 215,614.47/x
  3. Step 3: Cross multiply
    385,379.13x = 531,837.60 × 215,614.47
  4. Step 4: Simplify right side
    385,379.13x = 114,671,882,250.07
  5. Step 5: Solve for x
    x = 114,671,882,250.07/385,379.13
  6. Step 6: Final answer
    x = 297,556.03

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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.