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Finding the Fourth Proportional to 408,672.48, 612,489.60 and 183,792.72

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Solution

The fourth proportional to 408,672.48, 612,489.60 and 183,792.72 is: 275,455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,672.48 : 612,489.60 = 183,792.72 : x
  2. Step 2: Convert to fraction form
    408,672.48/612,489.60 = 183,792.72/x
  3. Step 3: Cross multiply
    408,672.48x = 612,489.60 × 183,792.72
  4. Step 4: Simplify right side
    408,672.48x = 112,571,129,555.71
  5. Step 5: Solve for x
    x = 112,571,129,555.71/408,672.48
  6. Step 6: Final answer
    x = 275,455.62

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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.