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Finding the Fourth Proportional to 259,616.80, 389,156.40 and 141,037.60

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Solution

The fourth proportional to 259,616.80, 389,156.40 and 141,037.60 is: 211,410.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,616.80 : 389,156.40 = 141,037.60 : x
  2. Step 2: Convert to fraction form
    259,616.80/389,156.40 = 141,037.60/x
  3. Step 3: Cross multiply
    259,616.80x = 389,156.40 × 141,037.60
  4. Step 4: Simplify right side
    259,616.80x = 54,885,684,680.64
  5. Step 5: Solve for x
    x = 54,885,684,680.64/259,616.80
  6. Step 6: Final answer
    x = 211,410.37

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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.