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Finding the Fourth Proportional to 571,025.76, 856,272.72 and 255,485.28

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Solution

The fourth proportional to 571,025.76, 856,272.72 and 255,485.28 is: 383,108.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,025.76 : 856,272.72 = 255,485.28 : x
  2. Step 2: Convert to fraction form
    571,025.76/856,272.72 = 255,485.28/x
  3. Step 3: Cross multiply
    571,025.76x = 856,272.72 × 255,485.28
  4. Step 4: Simplify right side
    571,025.76x = 218,765,075,625.56
  5. Step 5: Solve for x
    x = 218,765,075,625.56/571,025.76
  6. Step 6: Final answer
    x = 383,108.94

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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.