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Finding the Fourth Proportional to 309,893.47, 427,652.98 and 173,927.42

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Solution

The fourth proportional to 309,893.47, 427,652.98 and 173,927.42 is: 240,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,893.47 : 427,652.98 = 173,927.42 : x
  2. Step 2: Convert to fraction form
    309,893.47/427,652.98 = 173,927.42/x
  3. Step 3: Cross multiply
    309,893.47x = 427,652.98 × 173,927.42
  4. Step 4: Simplify right side
    309,893.47x = 74,380,577,369.36
  5. Step 5: Solve for x
    x = 74,380,577,369.36/309,893.47
  6. Step 6: Final answer
    x = 240,019.83

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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.