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Finding the Fourth Proportional to 298,638.90, 447,958.35 and 264,813.30

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Solution

The fourth proportional to 298,638.90, 447,958.35 and 264,813.30 is: 397,219.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,638.90 : 447,958.35 = 264,813.30 : x
  2. Step 2: Convert to fraction form
    298,638.90/447,958.35 = 264,813.30/x
  3. Step 3: Cross multiply
    298,638.90x = 447,958.35 × 264,813.30
  4. Step 4: Simplify right side
    298,638.90x = 118,625,328,926.06
  5. Step 5: Solve for x
    x = 118,625,328,926.06/298,638.90
  6. Step 6: Final answer
    x = 397,219.95

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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.