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Finding the Fourth Proportional to 389,766.94, 537,878.41 and 220,012.00

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Solution

The fourth proportional to 389,766.94, 537,878.41 and 220,012.00 is: 303,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,766.94 : 537,878.41 = 220,012.00 : x
  2. Step 2: Convert to fraction form
    389,766.94/537,878.41 = 220,012.00/x
  3. Step 3: Cross multiply
    389,766.94x = 537,878.41 × 220,012.00
  4. Step 4: Simplify right side
    389,766.94x = 118,339,702,846.19
  5. Step 5: Solve for x
    x = 118,339,702,846.19/389,766.94
  6. Step 6: Final answer
    x = 303,616.58

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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.