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Finding the Fourth Proportional to 213,810.60, 320,640.30 and 73,536.60

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Solution

The fourth proportional to 213,810.60, 320,640.30 and 73,536.60 is: 110,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,810.60 : 320,640.30 = 73,536.60 : x
  2. Step 2: Convert to fraction form
    213,810.60/320,640.30 = 73,536.60/x
  3. Step 3: Cross multiply
    213,810.60x = 320,640.30 × 73,536.60
  4. Step 4: Simplify right side
    213,810.60x = 23,578,797,484.98
  5. Step 5: Solve for x
    x = 23,578,797,484.98/213,810.60
  6. Step 6: Final answer
    x = 110,278.90

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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.