Home / 213,553.23-320,911.83-113,784.72

Finding the Fourth Proportional to 213,553.23, 320,911.83 and 113,784.72

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Solution

The fourth proportional to 213,553.23, 320,911.83 and 113,784.72 is: 170,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,553.23 : 320,911.83 = 113,784.72 : x
  2. Step 2: Convert to fraction form
    213,553.23/320,911.83 = 113,784.72/x
  3. Step 3: Cross multiply
    213,553.23x = 320,911.83 × 113,784.72
  4. Step 4: Simplify right side
    213,553.23x = 36,514,862,721.24
  5. Step 5: Solve for x
    x = 36,514,862,721.24/213,553.23
  6. Step 6: Final answer
    x = 170,987.17

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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.