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Finding the Fourth Proportional to 449,375.90, 620,143.43 and 245,432.70

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Solution

The fourth proportional to 449,375.90, 620,143.43 and 245,432.70 is: 338,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,375.90 : 620,143.43 = 245,432.70 : x
  2. Step 2: Convert to fraction form
    449,375.90/620,143.43 = 245,432.70/x
  3. Step 3: Cross multiply
    449,375.90x = 620,143.43 × 245,432.70
  4. Step 4: Simplify right side
    449,375.90x = 152,203,475,185.00
  5. Step 5: Solve for x
    x = 152,203,475,185.00/449,375.90
  6. Step 6: Final answer
    x = 338,699.69

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1.5x scale

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.