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Finding the Fourth Proportional to 289,131.30, 403,850.70 and 289,131.30

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Solution

The fourth proportional to 289,131.30, 403,850.70 and 289,131.30 is: 403,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,131.30 : 403,850.70 = 289,131.30 : x
  2. Step 2: Convert to fraction form
    289,131.30/403,850.70 = 289,131.30/x
  3. Step 3: Cross multiply
    289,131.30x = 403,850.70 × 289,131.30
  4. Step 4: Simplify right side
    289,131.30x = 116,765,877,896.91
  5. Step 5: Solve for x
    x = 116,765,877,896.91/289,131.30
  6. Step 6: Final answer
    x = 403,850.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.