Home / 259,563.90-389,455.20-141,320.10

Finding the Fourth Proportional to 259,563.90, 389,455.20 and 141,320.10

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Solution

The fourth proportional to 259,563.90, 389,455.20 and 141,320.10 is: 212,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,563.90 : 389,455.20 = 141,320.10 : x
  2. Step 2: Convert to fraction form
    259,563.90/389,455.20 = 141,320.10/x
  3. Step 3: Cross multiply
    259,563.90x = 389,455.20 × 141,320.10
  4. Step 4: Simplify right side
    259,563.90x = 55,037,847,809.52
  5. Step 5: Solve for x
    x = 55,037,847,809.52/259,563.90
  6. Step 6: Final answer
    x = 212,039.69

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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.