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Finding the Fourth Proportional to 298,064.80, 447,097.20 and 228,080.80

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Solution

The fourth proportional to 298,064.80, 447,097.20 and 228,080.80 is: 342,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,064.80 : 447,097.20 = 228,080.80 : x
  2. Step 2: Convert to fraction form
    298,064.80/447,097.20 = 228,080.80/x
  3. Step 3: Cross multiply
    298,064.80x = 447,097.20 × 228,080.80
  4. Step 4: Simplify right side
    298,064.80x = 101,974,287,053.76
  5. Step 5: Solve for x
    x = 101,974,287,053.76/298,064.80
  6. Step 6: Final answer
    x = 342,121.20

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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.