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Finding the Fourth Proportional to 213,620.72, 320,449.26 and 55,848.92

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Solution

The fourth proportional to 213,620.72, 320,449.26 and 55,848.92 is: 83,778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,620.72 : 320,449.26 = 55,848.92 : x
  2. Step 2: Convert to fraction form
    213,620.72/320,449.26 = 55,848.92/x
  3. Step 3: Cross multiply
    213,620.72x = 320,449.26 × 55,848.92
  4. Step 4: Simplify right side
    213,620.72x = 17,896,745,085.80
  5. Step 5: Solve for x
    x = 17,896,745,085.80/213,620.72
  6. Step 6: Final answer
    x = 83,778.13

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1.5x scale

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.