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Finding the Fourth Proportional to 445,915.51, 668,870.80 and 108,958.03

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Solution

The fourth proportional to 445,915.51, 668,870.80 and 108,958.03 is: 163,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,915.51 : 668,870.80 = 108,958.03 : x
  2. Step 2: Convert to fraction form
    445,915.51/668,870.80 = 108,958.03/x
  3. Step 3: Cross multiply
    445,915.51x = 668,870.80 × 108,958.03
  4. Step 4: Simplify right side
    445,915.51x = 72,878,844,692.52
  5. Step 5: Solve for x
    x = 72,878,844,692.52/445,915.51
  6. Step 6: Final answer
    x = 163,436.44

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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.