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Finding the Fourth Proportional to 420,690.60, 631,254.60 and 184,057.20

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Solution

The fourth proportional to 420,690.60, 631,254.60 and 184,057.20 is: 276,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,690.60 : 631,254.60 = 184,057.20 : x
  2. Step 2: Convert to fraction form
    420,690.60/631,254.60 = 184,057.20/x
  3. Step 3: Cross multiply
    420,690.60x = 631,254.60 × 184,057.20
  4. Step 4: Simplify right side
    420,690.60x = 116,186,954,163.12
  5. Step 5: Solve for x
    x = 116,186,954,163.12/420,690.60
  6. Step 6: Final answer
    x = 276,181.48

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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.