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Finding the Fourth Proportional to 550,137.60, 824,428.80 and 339,148.80

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Solution

The fourth proportional to 550,137.60, 824,428.80 and 339,148.80 is: 508,243.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,137.60 : 824,428.80 = 339,148.80 : x
  2. Step 2: Convert to fraction form
    550,137.60/824,428.80 = 339,148.80/x
  3. Step 3: Cross multiply
    550,137.60x = 824,428.80 × 339,148.80
  4. Step 4: Simplify right side
    550,137.60x = 279,604,038,205.44
  5. Step 5: Solve for x
    x = 279,604,038,205.44/550,137.60
  6. Step 6: Final answer
    x = 508,243.83

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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.