Home / 259,724.80-389,318.40-141,145.60

Finding the Fourth Proportional to 259,724.80, 389,318.40 and 141,145.60

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Solution

The fourth proportional to 259,724.80, 389,318.40 and 141,145.60 is: 211,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,724.80 : 389,318.40 = 141,145.60 : x
  2. Step 2: Convert to fraction form
    259,724.80/389,318.40 = 141,145.60/x
  3. Step 3: Cross multiply
    259,724.80x = 389,318.40 × 141,145.60
  4. Step 4: Simplify right side
    259,724.80x = 54,950,579,159.04
  5. Step 5: Solve for x
    x = 54,950,579,159.04/259,724.80
  6. Step 6: Final answer
    x = 211,572.32

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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.