Home / 259,632.90-389,558.70-141,389.10

Finding the Fourth Proportional to 259,632.90, 389,558.70 and 141,389.10

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Solution

The fourth proportional to 259,632.90, 389,558.70 and 141,389.10 is: 212,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,632.90 : 389,558.70 = 141,389.10 : x
  2. Step 2: Convert to fraction form
    259,632.90/389,558.70 = 141,389.10/x
  3. Step 3: Cross multiply
    259,632.90x = 389,558.70 × 141,389.10
  4. Step 4: Simplify right side
    259,632.90x = 55,079,353,990.17
  5. Step 5: Solve for x
    x = 55,079,353,990.17/259,632.90
  6. Step 6: Final answer
    x = 212,143.20

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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.