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Finding the Fourth Proportional to 328,972.64, 453,978.44 and 185,738.72

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Solution

The fourth proportional to 328,972.64, 453,978.44 and 185,738.72 is: 256,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,972.64 : 453,978.44 = 185,738.72 : x
  2. Step 2: Convert to fraction form
    328,972.64/453,978.44 = 185,738.72/x
  3. Step 3: Cross multiply
    328,972.64x = 453,978.44 × 185,738.72
  4. Step 4: Simplify right side
    328,972.64x = 84,321,374,353.20
  5. Step 5: Solve for x
    x = 84,321,374,353.20/328,972.64
  6. Step 6: Final answer
    x = 256,317.29

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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.