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Finding the Fourth Proportional to 223,638.40, 335,360.40 and 73,820.80

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Solution

The fourth proportional to 223,638.40, 335,360.40 and 73,820.80 is: 110,699.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,638.40 : 335,360.40 = 73,820.80 : x
  2. Step 2: Convert to fraction form
    223,638.40/335,360.40 = 73,820.80/x
  3. Step 3: Cross multiply
    223,638.40x = 335,360.40 × 73,820.80
  4. Step 4: Simplify right side
    223,638.40x = 24,756,573,016.32
  5. Step 5: Solve for x
    x = 24,756,573,016.32/223,638.40
  6. Step 6: Final answer
    x = 110,699.12

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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.