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Finding the Fourth Proportional to 203,820.10, 305,740.80 and 61,661.80

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Solution

The fourth proportional to 203,820.10, 305,740.80 and 61,661.80 is: 92,495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,820.10 : 305,740.80 = 61,661.80 : x
  2. Step 2: Convert to fraction form
    203,820.10/305,740.80 = 61,661.80/x
  3. Step 3: Cross multiply
    203,820.10x = 305,740.80 × 61,661.80
  4. Step 4: Simplify right side
    203,820.10x = 18,852,528,061.44
  5. Step 5: Solve for x
    x = 18,852,528,061.44/203,820.10
  6. Step 6: Final answer
    x = 92,495.92

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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.