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Finding the Fourth Proportional to 284,480.85, 426,931.24 and 134,720.85

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Solution

The fourth proportional to 284,480.85, 426,931.24 and 134,720.85 is: 202,180.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,480.85 : 426,931.24 = 134,720.85 : x
  2. Step 2: Convert to fraction form
    284,480.85/426,931.24 = 134,720.85/x
  3. Step 3: Cross multiply
    284,480.85x = 426,931.24 × 134,720.85
  4. Step 4: Simplify right side
    284,480.85x = 57,516,539,544.35
  5. Step 5: Solve for x
    x = 57,516,539,544.35/284,480.85
  6. Step 6: Final answer
    x = 202,180.71

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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.