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Finding the Fourth Proportional to 443,977.20, 665,965.80 and 163,603.80

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Solution

The fourth proportional to 443,977.20, 665,965.80 and 163,603.80 is: 245,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,977.20 : 665,965.80 = 163,603.80 : x
  2. Step 2: Convert to fraction form
    443,977.20/665,965.80 = 163,603.80/x
  3. Step 3: Cross multiply
    443,977.20x = 665,965.80 × 163,603.80
  4. Step 4: Simplify right side
    443,977.20x = 108,954,535,550.04
  5. Step 5: Solve for x
    x = 108,954,535,550.04/443,977.20
  6. Step 6: Final answer
    x = 245,405.70

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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.