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Finding the Fourth Proportional to 273,685.80, 410,528.70 and 161,711.40

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Solution

The fourth proportional to 273,685.80, 410,528.70 and 161,711.40 is: 242,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,685.80 : 410,528.70 = 161,711.40 : x
  2. Step 2: Convert to fraction form
    273,685.80/410,528.70 = 161,711.40/x
  3. Step 3: Cross multiply
    273,685.80x = 410,528.70 × 161,711.40
  4. Step 4: Simplify right side
    273,685.80x = 66,387,170,817.18
  5. Step 5: Solve for x
    x = 66,387,170,817.18/273,685.80
  6. Step 6: Final answer
    x = 242,567.10

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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.