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Finding the Fourth Proportional to 302,991.08, 418,108.89 and 167,018

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Solution

The fourth proportional to 302,991.08, 418,108.89 and 167,018 is: 230,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,991.08 : 418,108.89 = 167,018 : x
  2. Step 2: Convert to fraction form
    302,991.08/418,108.89 = 167,018/x
  3. Step 3: Cross multiply
    302,991.08x = 418,108.89 × 167,018
  4. Step 4: Simplify right side
    302,991.08x = 69,831,710,590.02
  5. Step 5: Solve for x
    x = 69,831,710,590.02/302,991.08
  6. Step 6: Final answer
    x = 230,474.48

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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.