Home / 397,315.20-596,078.40-172,579.20

Finding the Fourth Proportional to 397,315.20, 596,078.40 and 172,579.20

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Solution

The fourth proportional to 397,315.20, 596,078.40 and 172,579.20 is: 258,914.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,315.20 : 596,078.40 = 172,579.20 : x
  2. Step 2: Convert to fraction form
    397,315.20/596,078.40 = 172,579.20/x
  3. Step 3: Cross multiply
    397,315.20x = 596,078.40 × 172,579.20
  4. Step 4: Simplify right side
    397,315.20x = 102,870,733,409.28
  5. Step 5: Solve for x
    x = 102,870,733,409.28/397,315.20
  6. Step 6: Final answer
    x = 258,914.67

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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.