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Finding the Fourth Proportional to 450,375.50, 621,537.90 and 249,171.50

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Solution

The fourth proportional to 450,375.50, 621,537.90 and 249,171.50 is: 343,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,375.50 : 621,537.90 = 249,171.50 : x
  2. Step 2: Convert to fraction form
    450,375.50/621,537.90 = 249,171.50/x
  3. Step 3: Cross multiply
    450,375.50x = 621,537.90 × 249,171.50
  4. Step 4: Simplify right side
    450,375.50x = 154,869,530,849.85
  5. Step 5: Solve for x
    x = 154,869,530,849.85/450,375.50
  6. Step 6: Final answer
    x = 343,867.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.