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Finding the Fourth Proportional to 284,078.80, 425,923.80 and 134,390.80

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Solution

The fourth proportional to 284,078.80, 425,923.80 and 134,390.80 is: 201,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,078.80 : 425,923.80 = 134,390.80 : x
  2. Step 2: Convert to fraction form
    284,078.80/425,923.80 = 134,390.80/x
  3. Step 3: Cross multiply
    284,078.80x = 425,923.80 × 134,390.80
  4. Step 4: Simplify right side
    284,078.80x = 57,240,240,221.04
  5. Step 5: Solve for x
    x = 57,240,240,221.04/284,078.80
  6. Step 6: Final answer
    x = 201,494.23

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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.