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Finding the Fourth Proportional to 423,812.40, 635,200.20 and 186,903.60

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Solution

The fourth proportional to 423,812.40, 635,200.20 and 186,903.60 is: 280,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,812.40 : 635,200.20 = 186,903.60 : x
  2. Step 2: Convert to fraction form
    423,812.40/635,200.20 = 186,903.60/x
  3. Step 3: Cross multiply
    423,812.40x = 635,200.20 × 186,903.60
  4. Step 4: Simplify right side
    423,812.40x = 118,721,204,100.72
  5. Step 5: Solve for x
    x = 118,721,204,100.72/423,812.40
  6. Step 6: Final answer
    x = 280,126.78

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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.