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Finding the Fourth Proportional to 279,563.55, 419,050.04 and 137,210.78

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Solution

The fourth proportional to 279,563.55, 419,050.04 and 137,210.78 is: 205,671.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,563.55 : 419,050.04 = 137,210.78 : x
  2. Step 2: Convert to fraction form
    279,563.55/419,050.04 = 137,210.78/x
  3. Step 3: Cross multiply
    279,563.55x = 419,050.04 × 137,210.78
  4. Step 4: Simplify right side
    279,563.55x = 57,498,180,066.13
  5. Step 5: Solve for x
    x = 57,498,180,066.13/279,563.55
  6. Step 6: Final answer
    x = 205,671.23

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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.