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Finding the Fourth Proportional to 213,364.80, 320,062.80 and 73,122.24

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Solution

The fourth proportional to 213,364.80, 320,062.80 and 73,122.24 is: 109,688.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,364.80 : 320,062.80 = 73,122.24 : x
  2. Step 2: Convert to fraction form
    213,364.80/320,062.80 = 73,122.24/x
  3. Step 3: Cross multiply
    213,364.80x = 320,062.80 × 73,122.24
  4. Step 4: Simplify right side
    213,364.80x = 23,403,708,876.67
  5. Step 5: Solve for x
    x = 23,403,708,876.67/213,364.80
  6. Step 6: Final answer
    x = 109,688.71

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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.