Home / 263,320.16-395,021.20-85,785.84

Finding the Fourth Proportional to 263,320.16, 395,021.20 and 85,785.84

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Solution

The fourth proportional to 263,320.16, 395,021.20 and 85,785.84 is: 128,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,320.16 : 395,021.20 = 85,785.84 : x
  2. Step 2: Convert to fraction form
    263,320.16/395,021.20 = 85,785.84/x
  3. Step 3: Cross multiply
    263,320.16x = 395,021.20 × 85,785.84
  4. Step 4: Simplify right side
    263,320.16x = 33,887,225,459.81
  5. Step 5: Solve for x
    x = 33,887,225,459.81/263,320.16
  6. Step 6: Final answer
    x = 128,692.10

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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.