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Finding the Fourth Proportional to 449,639.33, 620,525.90 and 258,681.43

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Solution

The fourth proportional to 449,639.33, 620,525.90 and 258,681.43 is: 356,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,639.33 : 620,525.90 = 258,681.43 : x
  2. Step 2: Convert to fraction form
    449,639.33/620,525.90 = 258,681.43/x
  3. Step 3: Cross multiply
    449,639.33x = 620,525.90 × 258,681.43
  4. Step 4: Simplify right side
    449,639.33x = 160,518,522,768.00
  5. Step 5: Solve for x
    x = 160,518,522,768.00/449,639.33
  6. Step 6: Final answer
    x = 356,993.96

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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.