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Finding the Fourth Proportional to 419,979.67, 629,735.55 and 249,270.68

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Solution

The fourth proportional to 419,979.67, 629,735.55 and 249,270.68 is: 373,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,979.67 : 629,735.55 = 249,270.68 : x
  2. Step 2: Convert to fraction form
    419,979.67/629,735.55 = 249,270.68/x
  3. Step 3: Cross multiply
    419,979.67x = 629,735.55 × 249,270.68
  4. Step 4: Simplify right side
    419,979.67x = 156,974,609,408.25
  5. Step 5: Solve for x
    x = 156,974,609,408.25/419,979.67
  6. Step 6: Final answer
    x = 373,767.16

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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.