Home / 259,740.40-389,529.60-102,017.20

Finding the Fourth Proportional to 259,740.40, 389,529.60 and 102,017.20

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Solution

The fourth proportional to 259,740.40, 389,529.60 and 102,017.20 is: 152,993.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.40 : 389,529.60 = 102,017.20 : x
  2. Step 2: Convert to fraction form
    259,740.40/389,529.60 = 102,017.20/x
  3. Step 3: Cross multiply
    259,740.40x = 389,529.60 × 102,017.20
  4. Step 4: Simplify right side
    259,740.40x = 39,738,719,109.12
  5. Step 5: Solve for x
    x = 39,738,719,109.12/259,740.40
  6. Step 6: Final answer
    x = 152,993.99

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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.