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Finding the Fourth Proportional to 192,880.40, 289,320.60 and 68,205.20

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Solution

The fourth proportional to 192,880.40, 289,320.60 and 68,205.20 is: 102,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,880.40 : 289,320.60 = 68,205.20 : x
  2. Step 2: Convert to fraction form
    192,880.40/289,320.60 = 68,205.20/x
  3. Step 3: Cross multiply
    192,880.40x = 289,320.60 × 68,205.20
  4. Step 4: Simplify right side
    192,880.40x = 19,733,169,387.12
  5. Step 5: Solve for x
    x = 19,733,169,387.12/192,880.40
  6. Step 6: Final answer
    x = 102,307.80

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1.5x scale

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.