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Finding the Fourth Proportional to 465,505.92, 642,369.60 and 274,527.36

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Solution

The fourth proportional to 465,505.92, 642,369.60 and 274,527.36 is: 378,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,505.92 : 642,369.60 = 274,527.36 : x
  2. Step 2: Convert to fraction form
    465,505.92/642,369.60 = 274,527.36/x
  3. Step 3: Cross multiply
    465,505.92x = 642,369.60 × 274,527.36
  4. Step 4: Simplify right side
    465,505.92x = 176,348,030,432.26
  5. Step 5: Solve for x
    x = 176,348,030,432.26/465,505.92
  6. Step 6: Final answer
    x = 378,830.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.