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Finding the Fourth Proportional to 445,787.61, 668,679.06 and 108,830.04

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Solution

The fourth proportional to 445,787.61, 668,679.06 and 108,830.04 is: 163,244.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,787.61 : 668,679.06 = 108,830.04 : x
  2. Step 2: Convert to fraction form
    445,787.61/668,679.06 = 108,830.04/x
  3. Step 3: Cross multiply
    445,787.61x = 668,679.06 × 108,830.04
  4. Step 4: Simplify right side
    445,787.61x = 72,772,368,846.96
  5. Step 5: Solve for x
    x = 72,772,368,846.96/445,787.61
  6. Step 6: Final answer
    x = 163,244.49

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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.