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Finding the Fourth Proportional to 421,485.38, 632,560.20 and 184,991.30

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Solution

The fourth proportional to 421,485.38, 632,560.20 and 184,991.30 is: 277,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,485.38 : 632,560.20 = 184,991.30 : x
  2. Step 2: Convert to fraction form
    421,485.38/632,560.20 = 184,991.30/x
  3. Step 3: Cross multiply
    421,485.38x = 632,560.20 × 184,991.30
  4. Step 4: Simplify right side
    421,485.38x = 117,018,133,726.26
  5. Step 5: Solve for x
    x = 117,018,133,726.26/421,485.38
  6. Step 6: Final answer
    x = 277,632.72

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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.