Home / 259,868.77-389,817.02-82,389.67

Finding the Fourth Proportional to 259,868.77, 389,817.02 and 82,389.67

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Solution

The fourth proportional to 259,868.77, 389,817.02 and 82,389.67 is: 123,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,868.77 : 389,817.02 = 82,389.67 : x
  2. Step 2: Convert to fraction form
    259,868.77/389,817.02 = 82,389.67/x
  3. Step 3: Cross multiply
    259,868.77x = 389,817.02 × 82,389.67
  4. Step 4: Simplify right side
    259,868.77x = 32,116,895,638.18
  5. Step 5: Solve for x
    x = 32,116,895,638.18/259,868.77
  6. Step 6: Final answer
    x = 123,588.90

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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.