Home / 308,823.58-426,140.73-172,865.14

Finding the Fourth Proportional to 308,823.58, 426,140.73 and 172,865.14

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Solution

The fourth proportional to 308,823.58, 426,140.73 and 172,865.14 is: 238,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,823.58 : 426,140.73 = 172,865.14 : x
  2. Step 2: Convert to fraction form
    308,823.58/426,140.73 = 172,865.14/x
  3. Step 3: Cross multiply
    308,823.58x = 426,140.73 × 172,865.14
  4. Step 4: Simplify right side
    308,823.58x = 73,664,876,951.15
  5. Step 5: Solve for x
    x = 73,664,876,951.15/308,823.58
  6. Step 6: Final answer
    x = 238,533.85

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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.