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Finding the Fourth Proportional to 284,505.75, 426,813.93 and 84,821.72

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Solution

The fourth proportional to 284,505.75, 426,813.93 and 84,821.72 is: 127,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,505.75 : 426,813.93 = 84,821.72 : x
  2. Step 2: Convert to fraction form
    284,505.75/426,813.93 = 84,821.72/x
  3. Step 3: Cross multiply
    284,505.75x = 426,813.93 × 84,821.72
  4. Step 4: Simplify right side
    284,505.75x = 36,203,089,528.49
  5. Step 5: Solve for x
    x = 36,203,089,528.49/284,505.75
  6. Step 6: Final answer
    x = 127,249.06

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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.