Home / 312,185.37-430,815.81-168,945.45

Finding the Fourth Proportional to 312,185.37, 430,815.81 and 168,945.45

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Solution

The fourth proportional to 312,185.37, 430,815.81 and 168,945.45 is: 233,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,185.37 : 430,815.81 = 168,945.45 : x
  2. Step 2: Convert to fraction form
    312,185.37/430,815.81 = 168,945.45/x
  3. Step 3: Cross multiply
    312,185.37x = 430,815.81 × 168,945.45
  4. Step 4: Simplify right side
    312,185.37x = 72,784,369,905.55
  5. Step 5: Solve for x
    x = 72,784,369,905.55/312,185.37
  6. Step 6: Final answer
    x = 233,144.71

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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.