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Finding the Fourth Proportional to 655,268.20, 983,420.70 and 256,100.20

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Solution

The fourth proportional to 655,268.20, 983,420.70 and 256,100.20 is: 384,352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,268.20 : 983,420.70 = 256,100.20 : x
  2. Step 2: Convert to fraction form
    655,268.20/983,420.70 = 256,100.20/x
  3. Step 3: Cross multiply
    655,268.20x = 983,420.70 × 256,100.20
  4. Step 4: Simplify right side
    655,268.20x = 251,854,237,954.14
  5. Step 5: Solve for x
    x = 251,854,237,954.14/655,268.20
  6. Step 6: Final answer
    x = 384,352.91

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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.