Home / 259,740.57-389,610.87-70,186.40

Finding the Fourth Proportional to 259,740.57, 389,610.87 and 70,186.40

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Solution

The fourth proportional to 259,740.57, 389,610.87 and 70,186.40 is: 105,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.57 : 389,610.87 = 70,186.40 : x
  2. Step 2: Convert to fraction form
    259,740.57/389,610.87 = 70,186.40/x
  3. Step 3: Cross multiply
    259,740.57x = 389,610.87 × 70,186.40
  4. Step 4: Simplify right side
    259,740.57x = 27,345,382,418.11
  5. Step 5: Solve for x
    x = 27,345,382,418.11/259,740.57
  6. Step 6: Final answer
    x = 105,279.60

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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.