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Finding the Fourth Proportional to 449,509.11, 620,341.50 and 258,522.72

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Solution

The fourth proportional to 449,509.11, 620,341.50 and 258,522.72 is: 356,772.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,509.11 : 620,341.50 = 258,522.72 : x
  2. Step 2: Convert to fraction form
    449,509.11/620,341.50 = 258,522.72/x
  3. Step 3: Cross multiply
    449,509.11x = 620,341.50 × 258,522.72
  4. Step 4: Simplify right side
    449,509.11x = 160,372,370,616.27
  5. Step 5: Solve for x
    x = 160,372,370,616.27/449,509.11
  6. Step 6: Final answer
    x = 356,772.24

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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.