Home / 213,631.48-320,468.88-80,623.52

Finding the Fourth Proportional to 213,631.48, 320,468.88 and 80,623.52

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Solution

The fourth proportional to 213,631.48, 320,468.88 and 80,623.52 is: 120,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,631.48 : 320,468.88 = 80,623.52 : x
  2. Step 2: Convert to fraction form
    213,631.48/320,468.88 = 80,623.52/x
  3. Step 3: Cross multiply
    213,631.48x = 320,468.88 × 80,623.52
  4. Step 4: Simplify right side
    213,631.48x = 25,837,329,156.06
  5. Step 5: Solve for x
    x = 25,837,329,156.06/213,631.48
  6. Step 6: Final answer
    x = 120,943.45

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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.