Home / 385,238.08-531,631.92-215,488

Finding the Fourth Proportional to 385,238.08, 531,631.92 and 215,488

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Solution

The fourth proportional to 385,238.08, 531,631.92 and 215,488 is: 297,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,238.08 : 531,631.92 = 215,488 : x
  2. Step 2: Convert to fraction form
    385,238.08/531,631.92 = 215,488/x
  3. Step 3: Cross multiply
    385,238.08x = 531,631.92 × 215,488
  4. Step 4: Simplify right side
    385,238.08x = 114,560,299,176.96
  5. Step 5: Solve for x
    x = 114,560,299,176.96/385,238.08
  6. Step 6: Final answer
    x = 297,375.32

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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.