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Finding the Fourth Proportional to 242,037.20, 362,969.40 and 84,270.80

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Solution

The fourth proportional to 242,037.20, 362,969.40 and 84,270.80 is: 126,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,037.20 : 362,969.40 = 84,270.80 : x
  2. Step 2: Convert to fraction form
    242,037.20/362,969.40 = 84,270.80/x
  3. Step 3: Cross multiply
    242,037.20x = 362,969.40 × 84,270.80
  4. Step 4: Simplify right side
    242,037.20x = 30,587,721,713.52
  5. Step 5: Solve for x
    x = 30,587,721,713.52/242,037.20
  6. Step 6: Final answer
    x = 126,376.12

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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.