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Finding the Fourth Proportional to 452,591.40, 678,455.10 and 168,205.80

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Solution

The fourth proportional to 452,591.40, 678,455.10 and 168,205.80 is: 252,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,591.40 : 678,455.10 = 168,205.80 : x
  2. Step 2: Convert to fraction form
    452,591.40/678,455.10 = 168,205.80/x
  3. Step 3: Cross multiply
    452,591.40x = 678,455.10 × 168,205.80
  4. Step 4: Simplify right side
    452,591.40x = 114,120,082,859.58
  5. Step 5: Solve for x
    x = 114,120,082,859.58/452,591.40
  6. Step 6: Final answer
    x = 252,148.15

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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.