Home / 259,629.60-389,444.40-141,531.60

Finding the Fourth Proportional to 259,629.60, 389,444.40 and 141,531.60

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Solution

The fourth proportional to 259,629.60, 389,444.40 and 141,531.60 is: 212,297.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,629.60 : 389,444.40 = 141,531.60 : x
  2. Step 2: Convert to fraction form
    259,629.60/389,444.40 = 141,531.60/x
  3. Step 3: Cross multiply
    259,629.60x = 389,444.40 × 141,531.60
  4. Step 4: Simplify right side
    259,629.60x = 55,118,689,043.04
  5. Step 5: Solve for x
    x = 55,118,689,043.04/259,629.60
  6. Step 6: Final answer
    x = 212,297.40

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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.