Home / 388,768.29-536,680.35-274,140.33

Finding the Fourth Proportional to 388,768.29, 536,680.35 and 274,140.33

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Solution

The fourth proportional to 388,768.29, 536,680.35 and 274,140.33 is: 378,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,768.29 : 536,680.35 = 274,140.33 : x
  2. Step 2: Convert to fraction form
    388,768.29/536,680.35 = 274,140.33/x
  3. Step 3: Cross multiply
    388,768.29x = 536,680.35 × 274,140.33
  4. Step 4: Simplify right side
    388,768.29x = 147,125,728,253.52
  5. Step 5: Solve for x
    x = 147,125,728,253.52/388,768.29
  6. Step 6: Final answer
    x = 378,440.66

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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.