Home / 209,727.72-289,172.70-171,345.06

Finding the Fourth Proportional to 209,727.72, 289,172.70 and 171,345.06

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Solution

The fourth proportional to 209,727.72, 289,172.70 and 171,345.06 is: 236,250.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,727.72 : 289,172.70 = 171,345.06 : x
  2. Step 2: Convert to fraction form
    209,727.72/289,172.70 = 171,345.06/x
  3. Step 3: Cross multiply
    209,727.72x = 289,172.70 × 171,345.06
  4. Step 4: Simplify right side
    209,727.72x = 49,548,313,631.86
  5. Step 5: Solve for x
    x = 49,548,313,631.86/209,727.72
  6. Step 6: Final answer
    x = 236,250.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.