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Finding the Fourth Proportional to 259,656.60, 389,703.60 and 101,998.20

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Solution

The fourth proportional to 259,656.60, 389,703.60 and 101,998.20 is: 153,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,656.60 : 389,703.60 = 101,998.20 : x
  2. Step 2: Convert to fraction form
    259,656.60/389,703.60 = 101,998.20/x
  3. Step 3: Cross multiply
    259,656.60x = 389,703.60 × 101,998.20
  4. Step 4: Simplify right side
    259,656.60x = 39,749,065,733.52
  5. Step 5: Solve for x
    x = 39,749,065,733.52/259,656.60
  6. Step 6: Final answer
    x = 153,083.21

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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.