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Finding the Fourth Proportional to 449,508.28, 620,340.28 and 258,521.80

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Solution

The fourth proportional to 449,508.28, 620,340.28 and 258,521.80 is: 356,770.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,508.28 : 620,340.28 = 258,521.80 : x
  2. Step 2: Convert to fraction form
    449,508.28/620,340.28 = 258,521.80/x
  3. Step 3: Cross multiply
    449,508.28x = 620,340.28 × 258,521.80
  4. Step 4: Simplify right side
    449,508.28x = 160,371,485,798.10
  5. Step 5: Solve for x
    x = 160,371,485,798.10/449,508.28
  6. Step 6: Final answer
    x = 356,770.93

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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.