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Finding the Fourth Proportional to 626,257.72, 938,978.34 and 266,241.88

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Solution

The fourth proportional to 626,257.72, 938,978.34 and 266,241.88 is: 399,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,257.72 : 938,978.34 = 266,241.88 : x
  2. Step 2: Convert to fraction form
    626,257.72/938,978.34 = 266,241.88/x
  3. Step 3: Cross multiply
    626,257.72x = 938,978.34 × 266,241.88
  4. Step 4: Simplify right side
    626,257.72x = 249,995,358,520.88
  5. Step 5: Solve for x
    x = 249,995,358,520.88/626,257.72
  6. Step 6: Final answer
    x = 399,189.26

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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.