Home / 263,320.20-395,042.70-85,828.20

Finding the Fourth Proportional to 263,320.20, 395,042.70 and 85,828.20

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Solution

The fourth proportional to 263,320.20, 395,042.70 and 85,828.20 is: 128,762.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,320.20 : 395,042.70 = 85,828.20 : x
  2. Step 2: Convert to fraction form
    263,320.20/395,042.70 = 85,828.20/x
  3. Step 3: Cross multiply
    263,320.20x = 395,042.70 × 85,828.20
  4. Step 4: Simplify right side
    263,320.20x = 33,905,803,864.14
  5. Step 5: Solve for x
    x = 33,905,803,864.14/263,320.20
  6. Step 6: Final answer
    x = 128,762.64

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1.5x scale

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.