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Finding the Fourth Proportional to 339,271.70, 508,907.55 and 310,241.30

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Solution

The fourth proportional to 339,271.70, 508,907.55 and 310,241.30 is: 465,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,271.70 : 508,907.55 = 310,241.30 : x
  2. Step 2: Convert to fraction form
    339,271.70/508,907.55 = 310,241.30/x
  3. Step 3: Cross multiply
    339,271.70x = 508,907.55 × 310,241.30
  4. Step 4: Simplify right side
    339,271.70x = 157,884,139,891.82
  5. Step 5: Solve for x
    x = 157,884,139,891.82/339,271.70
  6. Step 6: Final answer
    x = 465,361.95

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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.