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Finding the Fourth Proportional to 445,784.87, 668,674.95 and 108,827.30

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Solution

The fourth proportional to 445,784.87, 668,674.95 and 108,827.30 is: 163,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,784.87 : 668,674.95 = 108,827.30 : x
  2. Step 2: Convert to fraction form
    445,784.87/668,674.95 = 108,827.30/x
  3. Step 3: Cross multiply
    445,784.87x = 668,674.95 × 108,827.30
  4. Step 4: Simplify right side
    445,784.87x = 72,770,089,386.14
  5. Step 5: Solve for x
    x = 72,770,089,386.14/445,784.87
  6. Step 6: Final answer
    x = 163,240.38

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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.