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Finding the Fourth Proportional to 178,698.40, 268,047.60 and 170,825.20

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Solution

The fourth proportional to 178,698.40, 268,047.60 and 170,825.20 is: 256,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,698.40 : 268,047.60 = 170,825.20 : x
  2. Step 2: Convert to fraction form
    178,698.40/268,047.60 = 170,825.20/x
  3. Step 3: Cross multiply
    178,698.40x = 268,047.60 × 170,825.20
  4. Step 4: Simplify right side
    178,698.40x = 45,789,284,879.52
  5. Step 5: Solve for x
    x = 45,789,284,879.52/178,698.40
  6. Step 6: Final answer
    x = 256,237.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.