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Finding the Fourth Proportional to 449,787.60, 620,730 and 258,829.56

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Solution

The fourth proportional to 449,787.60, 620,730 and 258,829.56 is: 357,198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,787.60 : 620,730 = 258,829.56 : x
  2. Step 2: Convert to fraction form
    449,787.60/620,730 = 258,829.56/x
  3. Step 3: Cross multiply
    449,787.60x = 620,730 × 258,829.56
  4. Step 4: Simplify right side
    449,787.60x = 160,663,272,778.80
  5. Step 5: Solve for x
    x = 160,663,272,778.80/449,787.60
  6. Step 6: Final answer
    x = 357,198.09

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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.