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Finding the Fourth Proportional to 298,083.40, 447,125.10 and 76,467.40

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Solution

The fourth proportional to 298,083.40, 447,125.10 and 76,467.40 is: 114,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,083.40 : 447,125.10 = 76,467.40 : x
  2. Step 2: Convert to fraction form
    298,083.40/447,125.10 = 76,467.40/x
  3. Step 3: Cross multiply
    298,083.40x = 447,125.10 × 76,467.40
  4. Step 4: Simplify right side
    298,083.40x = 34,190,493,871.74
  5. Step 5: Solve for x
    x = 34,190,493,871.74/298,083.40
  6. Step 6: Final answer
    x = 114,701.10

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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.