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Finding the Fourth Proportional to 298,970.40, 448,455.60 and 269,445.90

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Solution

The fourth proportional to 298,970.40, 448,455.60 and 269,445.90 is: 404,168.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,970.40 : 448,455.60 = 269,445.90 : x
  2. Step 2: Convert to fraction form
    298,970.40/448,455.60 = 269,445.90/x
  3. Step 3: Cross multiply
    298,970.40x = 448,455.60 × 269,445.90
  4. Step 4: Simplify right side
    298,970.40x = 120,834,522,752.04
  5. Step 5: Solve for x
    x = 120,834,522,752.04/298,970.40
  6. Step 6: Final answer
    x = 404,168.85

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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.