Home / 420,501.20-631,014.26-171,183.20

Finding the Fourth Proportional to 420,501.20, 631,014.26 and 171,183.20

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Solution

The fourth proportional to 420,501.20, 631,014.26 and 171,183.20 is: 256,881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,501.20 : 631,014.26 = 171,183.20 : x
  2. Step 2: Convert to fraction form
    420,501.20/631,014.26 = 171,183.20/x
  3. Step 3: Cross multiply
    420,501.20x = 631,014.26 × 171,183.20
  4. Step 4: Simplify right side
    420,501.20x = 108,019,036,261.45
  5. Step 5: Solve for x
    x = 108,019,036,261.45/420,501.20
  6. Step 6: Final answer
    x = 256,881.64

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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.