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Finding the Fourth Proportional to 258,027.40, 387,059.37 and 68,486.23

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Solution

The fourth proportional to 258,027.40, 387,059.37 and 68,486.23 is: 102,734.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,027.40 : 387,059.37 = 68,486.23 : x
  2. Step 2: Convert to fraction form
    258,027.40/387,059.37 = 68,486.23/x
  3. Step 3: Cross multiply
    258,027.40x = 387,059.37 × 68,486.23
  4. Step 4: Simplify right side
    258,027.40x = 26,508,237,037.48
  5. Step 5: Solve for x
    x = 26,508,237,037.48/258,027.40
  6. Step 6: Final answer
    x = 102,734.19

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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.