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Finding the Fourth Proportional to 420,565.20, 630,993.60 and 184,077.60

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Solution

The fourth proportional to 420,565.20, 630,993.60 and 184,077.60 is: 276,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,565.20 : 630,993.60 = 184,077.60 : x
  2. Step 2: Convert to fraction form
    420,565.20/630,993.60 = 184,077.60/x
  3. Step 3: Cross multiply
    420,565.20x = 630,993.60 × 184,077.60
  4. Step 4: Simplify right side
    420,565.20x = 116,151,787,503.36
  5. Step 5: Solve for x
    x = 116,151,787,503.36/420,565.20
  6. Step 6: Final answer
    x = 276,180.22

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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.