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Finding the Fourth Proportional to 215,426.70, 322,374.60 and 187,651.80

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Solution

The fourth proportional to 215,426.70, 322,374.60 and 187,651.80 is: 280,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,426.70 : 322,374.60 = 187,651.80 : x
  2. Step 2: Convert to fraction form
    215,426.70/322,374.60 = 187,651.80/x
  3. Step 3: Cross multiply
    215,426.70x = 322,374.60 × 187,651.80
  4. Step 4: Simplify right side
    215,426.70x = 60,494,173,964.28
  5. Step 5: Solve for x
    x = 60,494,173,964.28/215,426.70
  6. Step 6: Final answer
    x = 280,810.94

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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.