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Finding the Fourth Proportional to 403,367.80, 605,051.70 and 166,880.20

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Solution

The fourth proportional to 403,367.80, 605,051.70 and 166,880.20 is: 250,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,367.80 : 605,051.70 = 166,880.20 : x
  2. Step 2: Convert to fraction form
    403,367.80/605,051.70 = 166,880.20/x
  3. Step 3: Cross multiply
    403,367.80x = 605,051.70 × 166,880.20
  4. Step 4: Simplify right side
    403,367.80x = 100,971,148,706.34
  5. Step 5: Solve for x
    x = 100,971,148,706.34/403,367.80
  6. Step 6: Final answer
    x = 250,320.30

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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.