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Finding the Fourth Proportional to 408,051.90, 612,076.95 and 108,532.53

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Solution

The fourth proportional to 408,051.90, 612,076.95 and 108,532.53 is: 162,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,051.90 : 612,076.95 = 108,532.53 : x
  2. Step 2: Convert to fraction form
    408,051.90/612,076.95 = 108,532.53/x
  3. Step 3: Cross multiply
    408,051.90x = 612,076.95 × 108,532.53
  4. Step 4: Simplify right side
    408,051.90x = 66,430,259,938.18
  5. Step 5: Solve for x
    x = 66,430,259,938.18/408,051.90
  6. Step 6: Final answer
    x = 162,798.56

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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.