Home / 312,185.41-430,815.78-168,945.41

Finding the Fourth Proportional to 312,185.41, 430,815.78 and 168,945.41

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Solution

The fourth proportional to 312,185.41, 430,815.78 and 168,945.41 is: 233,144.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,185.41 : 430,815.78 = 168,945.41 : x
  2. Step 2: Convert to fraction form
    312,185.41/430,815.78 = 168,945.41/x
  3. Step 3: Cross multiply
    312,185.41x = 430,815.78 × 168,945.41
  4. Step 4: Simplify right side
    312,185.41x = 72,784,349,663.61
  5. Step 5: Solve for x
    x = 72,784,349,663.61/312,185.41
  6. Step 6: Final answer
    x = 233,144.62

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1.5x scale

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.