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Finding the Fourth Proportional to 286,892.90, 429,355.20 and 263,273.30

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Solution

The fourth proportional to 286,892.90, 429,355.20 and 263,273.30 is: 394,006.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,892.90 : 429,355.20 = 263,273.30 : x
  2. Step 2: Convert to fraction form
    286,892.90/429,355.20 = 263,273.30/x
  3. Step 3: Cross multiply
    286,892.90x = 429,355.20 × 263,273.30
  4. Step 4: Simplify right side
    286,892.90x = 113,037,760,376.16
  5. Step 5: Solve for x
    x = 113,037,760,376.16/286,892.90
  6. Step 6: Final answer
    x = 394,006.82

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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.