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Finding the Fourth Proportional to 397,791.29, 549,009.84 and 223,381.08

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Solution

The fourth proportional to 397,791.29, 549,009.84 and 223,381.08 is: 308,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,791.29 : 549,009.84 = 223,381.08 : x
  2. Step 2: Convert to fraction form
    397,791.29/549,009.84 = 223,381.08/x
  3. Step 3: Cross multiply
    397,791.29x = 549,009.84 × 223,381.08
  4. Step 4: Simplify right side
    397,791.29x = 122,638,410,989.83
  5. Step 5: Solve for x
    x = 122,638,410,989.83/397,791.29
  6. Step 6: Final answer
    x = 308,298.39

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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.