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Finding the Fourth Proportional to 305,311.01, 421,319.23 and 184,431.25

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Solution

The fourth proportional to 305,311.01, 421,319.23 and 184,431.25 is: 254,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,311.01 : 421,319.23 = 184,431.25 : x
  2. Step 2: Convert to fraction form
    305,311.01/421,319.23 = 184,431.25/x
  3. Step 3: Cross multiply
    305,311.01x = 421,319.23 × 184,431.25
  4. Step 4: Simplify right side
    305,311.01x = 77,704,430,951.99
  5. Step 5: Solve for x
    x = 77,704,430,951.99/305,311.01
  6. Step 6: Final answer
    x = 254,509.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.