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Finding the Fourth Proportional to 383,410.20, 575,115.30 and 243,787.80

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Solution

The fourth proportional to 383,410.20, 575,115.30 and 243,787.80 is: 365,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,410.20 : 575,115.30 = 243,787.80 : x
  2. Step 2: Convert to fraction form
    383,410.20/575,115.30 = 243,787.80/x
  3. Step 3: Cross multiply
    383,410.20x = 575,115.30 × 243,787.80
  4. Step 4: Simplify right side
    383,410.20x = 140,206,093,733.34
  5. Step 5: Solve for x
    x = 140,206,093,733.34/383,410.20
  6. Step 6: Final answer
    x = 365,681.70

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1.5x scale

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.