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Finding the Fourth Proportional to 403,262.60, 604,893.90 and 278,846.60

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Solution

The fourth proportional to 403,262.60, 604,893.90 and 278,846.60 is: 418,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,262.60 : 604,893.90 = 278,846.60 : x
  2. Step 2: Convert to fraction form
    403,262.60/604,893.90 = 278,846.60/x
  3. Step 3: Cross multiply
    403,262.60x = 604,893.90 × 278,846.60
  4. Step 4: Simplify right side
    403,262.60x = 168,672,607,375.74
  5. Step 5: Solve for x
    x = 168,672,607,375.74/403,262.60
  6. Step 6: Final answer
    x = 418,269.90

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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.