Home / 384,945.42-531,236.43-215,186.70

Finding the Fourth Proportional to 384,945.42, 531,236.43 and 215,186.70

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Solution

The fourth proportional to 384,945.42, 531,236.43 and 215,186.70 is: 296,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,945.42 : 531,236.43 = 215,186.70 : x
  2. Step 2: Convert to fraction form
    384,945.42/531,236.43 = 215,186.70/x
  3. Step 3: Cross multiply
    384,945.42x = 531,236.43 × 215,186.70
  4. Step 4: Simplify right side
    384,945.42x = 114,315,014,291.48
  5. Step 5: Solve for x
    x = 114,315,014,291.48/384,945.42
  6. Step 6: Final answer
    x = 296,964.21

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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.