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Finding the Fourth Proportional to 298,969.20, 448,299.90 and 88,579.80

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Solution

The fourth proportional to 298,969.20, 448,299.90 and 88,579.80 is: 132,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,969.20 : 448,299.90 = 88,579.80 : x
  2. Step 2: Convert to fraction form
    298,969.20/448,299.90 = 88,579.80/x
  3. Step 3: Cross multiply
    298,969.20x = 448,299.90 × 88,579.80
  4. Step 4: Simplify right side
    298,969.20x = 39,710,315,482.02
  5. Step 5: Solve for x
    x = 39,710,315,482.02/298,969.20
  6. Step 6: Final answer
    x = 132,824.10

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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.