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Finding the Fourth Proportional to 303,528.70, 455,293.05 and 161,811.10

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Solution

The fourth proportional to 303,528.70, 455,293.05 and 161,811.10 is: 242,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,528.70 : 455,293.05 = 161,811.10 : x
  2. Step 2: Convert to fraction form
    303,528.70/455,293.05 = 161,811.10/x
  3. Step 3: Cross multiply
    303,528.70x = 455,293.05 × 161,811.10
  4. Step 4: Simplify right side
    303,528.70x = 73,671,469,242.86
  5. Step 5: Solve for x
    x = 73,671,469,242.86/303,528.70
  6. Step 6: Final answer
    x = 242,716.65

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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.