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Finding the Fourth Proportional to 298,604.80, 447,907.20 and 88,239.70

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Solution

The fourth proportional to 298,604.80, 447,907.20 and 88,239.70 is: 132,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,604.80 : 447,907.20 = 88,239.70 : x
  2. Step 2: Convert to fraction form
    298,604.80/447,907.20 = 88,239.70/x
  3. Step 3: Cross multiply
    298,604.80x = 447,907.20 × 88,239.70
  4. Step 4: Simplify right side
    298,604.80x = 39,523,196,955.84
  5. Step 5: Solve for x
    x = 39,523,196,955.84/298,604.80
  6. Step 6: Final answer
    x = 132,359.55

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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.