Home / 621,246.39-931,765.79-172,012.67

Finding the Fourth Proportional to 621,246.39, 931,765.79 and 172,012.67

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Solution

The fourth proportional to 621,246.39, 931,765.79 and 172,012.67 is: 257,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,246.39 : 931,765.79 = 172,012.67 : x
  2. Step 2: Convert to fraction form
    621,246.39/931,765.79 = 172,012.67/x
  3. Step 3: Cross multiply
    621,246.39x = 931,765.79 × 172,012.67
  4. Step 4: Simplify right side
    621,246.39x = 160,275,521,352.56
  5. Step 5: Solve for x
    x = 160,275,521,352.56/621,246.39
  6. Step 6: Final answer
    x = 257,990.27

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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.