Home / 312,145.86-430,760.61-168,905.85

Finding the Fourth Proportional to 312,145.86, 430,760.61 and 168,905.85

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Solution

The fourth proportional to 312,145.86, 430,760.61 and 168,905.85 is: 233,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,145.86 : 430,760.61 = 168,905.85 : x
  2. Step 2: Convert to fraction form
    312,145.86/430,760.61 = 168,905.85/x
  3. Step 3: Cross multiply
    312,145.86x = 430,760.61 × 168,905.85
  4. Step 4: Simplify right side
    312,145.86x = 72,757,986,978.57
  5. Step 5: Solve for x
    x = 72,757,986,978.57/312,145.86
  6. Step 6: Final answer
    x = 233,089.71

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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.