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Finding the Fourth Proportional to 318,563.87, 477,285.18 and 299,600.19

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Solution

The fourth proportional to 318,563.87, 477,285.18 and 299,600.19 is: 448,873.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,563.87 : 477,285.18 = 299,600.19 : x
  2. Step 2: Convert to fraction form
    318,563.87/477,285.18 = 299,600.19/x
  3. Step 3: Cross multiply
    318,563.87x = 477,285.18 × 299,600.19
  4. Step 4: Simplify right side
    318,563.87x = 142,994,730,612.18
  5. Step 5: Solve for x
    x = 142,994,730,612.18/318,563.87
  6. Step 6: Final answer
    x = 448,873.04

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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.