Home / 263,318.66-395,018.95-85,784.34

Finding the Fourth Proportional to 263,318.66, 395,018.95 and 85,784.34

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Solution

The fourth proportional to 263,318.66, 395,018.95 and 85,784.34 is: 128,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,318.66 : 395,018.95 = 85,784.34 : x
  2. Step 2: Convert to fraction form
    263,318.66/395,018.95 = 85,784.34/x
  3. Step 3: Cross multiply
    263,318.66x = 395,018.95 × 85,784.34
  4. Step 4: Simplify right side
    263,318.66x = 33,886,439,913.24
  5. Step 5: Solve for x
    x = 33,886,439,913.24/263,318.66
  6. Step 6: Final answer
    x = 128,689.85

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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.