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Finding the Fourth Proportional to 449,269.99, 620,017.83 and 245,339.86

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Solution

The fourth proportional to 449,269.99, 620,017.83 and 245,339.86 is: 338,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,269.99 : 620,017.83 = 245,339.86 : x
  2. Step 2: Convert to fraction form
    449,269.99/620,017.83 = 245,339.86/x
  3. Step 3: Cross multiply
    449,269.99x = 620,017.83 × 245,339.86
  4. Step 4: Simplify right side
    449,269.99x = 152,115,087,609.70
  5. Step 5: Solve for x
    x = 152,115,087,609.70/449,269.99
  6. Step 6: Final answer
    x = 338,582.79

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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.