Home / 388,733.78-536,436.07-216,642.60

Finding the Fourth Proportional to 388,733.78, 536,436.07 and 216,642.60

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Solution

The fourth proportional to 388,733.78, 536,436.07 and 216,642.60 is: 298,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,733.78 : 536,436.07 = 216,642.60 : x
  2. Step 2: Convert to fraction form
    388,733.78/536,436.07 = 216,642.60/x
  3. Step 3: Cross multiply
    388,733.78x = 536,436.07 × 216,642.60
  4. Step 4: Simplify right side
    388,733.78x = 116,214,904,396.98
  5. Step 5: Solve for x
    x = 116,214,904,396.98/388,733.78
  6. Step 6: Final answer
    x = 298,957.56

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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.