Home / 213,657.03-320,259.56-80,479.67

Finding the Fourth Proportional to 213,657.03, 320,259.56 and 80,479.67

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Solution

The fourth proportional to 213,657.03, 320,259.56 and 80,479.67 is: 120,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,657.03 : 320,259.56 = 80,479.67 : x
  2. Step 2: Convert to fraction form
    213,657.03/320,259.56 = 80,479.67/x
  3. Step 3: Cross multiply
    213,657.03x = 320,259.56 × 80,479.67
  4. Step 4: Simplify right side
    213,657.03x = 25,774,381,699.45
  5. Step 5: Solve for x
    x = 25,774,381,699.45/213,657.03
  6. Step 6: Final answer
    x = 120,634.37

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1.5x scale

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.