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Finding the Fourth Proportional to 388,763.29, 536,673.45 and 274,135.33

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Solution

The fourth proportional to 388,763.29, 536,673.45 and 274,135.33 is: 378,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,763.29 : 536,673.45 = 274,135.33 : x
  2. Step 2: Convert to fraction form
    388,763.29/536,673.45 = 274,135.33/x
  3. Step 3: Cross multiply
    388,763.29x = 536,673.45 × 274,135.33
  4. Step 4: Simplify right side
    388,763.29x = 147,121,153,317.99
  5. Step 5: Solve for x
    x = 147,121,153,317.99/388,763.29
  6. Step 6: Final answer
    x = 378,433.76

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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.