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Finding the Fourth Proportional to 259,412.84, 389,090.08 and 69,887.21

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Solution

The fourth proportional to 259,412.84, 389,090.08 and 69,887.21 is: 104,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,412.84 : 389,090.08 = 69,887.21 : x
  2. Step 2: Convert to fraction form
    259,412.84/389,090.08 = 69,887.21/x
  3. Step 3: Cross multiply
    259,412.84x = 389,090.08 × 69,887.21
  4. Step 4: Simplify right side
    259,412.84x = 27,192,420,129.88
  5. Step 5: Solve for x
    x = 27,192,420,129.88/259,412.84
  6. Step 6: Final answer
    x = 104,822.95

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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.