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Finding the Fourth Proportional to 284,486.40, 426,729.60 and 206,150.40

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Solution

The fourth proportional to 284,486.40, 426,729.60 and 206,150.40 is: 309,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,486.40 : 426,729.60 = 206,150.40 : x
  2. Step 2: Convert to fraction form
    284,486.40/426,729.60 = 206,150.40/x
  3. Step 3: Cross multiply
    284,486.40x = 426,729.60 × 206,150.40
  4. Step 4: Simplify right side
    284,486.40x = 87,970,477,731.84
  5. Step 5: Solve for x
    x = 87,970,477,731.84/284,486.40
  6. Step 6: Final answer
    x = 309,225.60

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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.