Home / 385,006.37-531,310.01-215,240.49

Finding the Fourth Proportional to 385,006.37, 531,310.01 and 215,240.49

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Solution

The fourth proportional to 385,006.37, 531,310.01 and 215,240.49 is: 297,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,006.37 : 531,310.01 = 215,240.49 : x
  2. Step 2: Convert to fraction form
    385,006.37/531,310.01 = 215,240.49/x
  3. Step 3: Cross multiply
    385,006.37x = 531,310.01 × 215,240.49
  4. Step 4: Simplify right side
    385,006.37x = 114,359,425,818.10
  5. Step 5: Solve for x
    x = 114,359,425,818.10/385,006.37
  6. Step 6: Final answer
    x = 297,032.56

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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.