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Finding the Fourth Proportional to 420,989.40, 631,697.40 and 184,334.40

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Solution

The fourth proportional to 420,989.40, 631,697.40 and 184,334.40 is: 276,595.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,989.40 : 631,697.40 = 184,334.40 : x
  2. Step 2: Convert to fraction form
    420,989.40/631,697.40 = 184,334.40/x
  3. Step 3: Cross multiply
    420,989.40x = 631,697.40 × 184,334.40
  4. Step 4: Simplify right side
    420,989.40x = 116,443,561,210.56
  5. Step 5: Solve for x
    x = 116,443,561,210.56/420,989.40
  6. Step 6: Final answer
    x = 276,595.00

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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.