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Finding the Fourth Proportional to 423,847.80, 635,771.70 and 187,068.60

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Solution

The fourth proportional to 423,847.80, 635,771.70 and 187,068.60 is: 280,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,847.80 : 635,771.70 = 187,068.60 : x
  2. Step 2: Convert to fraction form
    423,847.80/635,771.70 = 187,068.60/x
  3. Step 3: Cross multiply
    423,847.80x = 635,771.70 × 187,068.60
  4. Step 4: Simplify right side
    423,847.80x = 118,932,921,838.62
  5. Step 5: Solve for x
    x = 118,932,921,838.62/423,847.80
  6. Step 6: Final answer
    x = 280,602.90

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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.