Home / 213,828.86-320,814.54-71,688.18

Finding the Fourth Proportional to 213,828.86, 320,814.54 and 71,688.18

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Solution

The fourth proportional to 213,828.86, 320,814.54 and 71,688.18 is: 107,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,828.86 : 320,814.54 = 71,688.18 : x
  2. Step 2: Convert to fraction form
    213,828.86/320,814.54 = 71,688.18/x
  3. Step 3: Cross multiply
    213,828.86x = 320,814.54 × 71,688.18
  4. Step 4: Simplify right side
    213,828.86x = 22,998,610,490.14
  5. Step 5: Solve for x
    x = 22,998,610,490.14/213,828.86
  6. Step 6: Final answer
    x = 107,556.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.