Home / 385,095.69-531,456.57-215,329.77

Finding the Fourth Proportional to 385,095.69, 531,456.57 and 215,329.77

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Solution

The fourth proportional to 385,095.69, 531,456.57 and 215,329.77 is: 297,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,095.69 : 531,456.57 = 215,329.77 : x
  2. Step 2: Convert to fraction form
    385,095.69/531,456.57 = 215,329.77/x
  3. Step 3: Cross multiply
    385,095.69x = 531,456.57 × 215,329.77
  4. Step 4: Simplify right side
    385,095.69x = 114,438,420,983.09
  5. Step 5: Solve for x
    x = 114,438,420,983.09/385,095.69
  6. Step 6: Final answer
    x = 297,168.79

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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.