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Finding the Fourth Proportional to 255,893.37, 383,754.27 and 85,075.67

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Solution

The fourth proportional to 255,893.37, 383,754.27 and 85,075.67 is: 127,584.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,893.37 : 383,754.27 = 85,075.67 : x
  2. Step 2: Convert to fraction form
    255,893.37/383,754.27 = 85,075.67/x
  3. Step 3: Cross multiply
    255,893.37x = 383,754.27 × 85,075.67
  4. Step 4: Simplify right side
    255,893.37x = 32,648,151,635.61
  5. Step 5: Solve for x
    x = 32,648,151,635.61/255,893.37
  6. Step 6: Final answer
    x = 127,584.98

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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.