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Finding the Fourth Proportional to 346,790, 520,185 and 84,134

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Solution

The fourth proportional to 346,790, 520,185 and 84,134 is: 126,201

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,790 : 520,185 = 84,134 : x
  2. Step 2: Convert to fraction form
    346,790/520,185 = 84,134/x
  3. Step 3: Cross multiply
    346,790x = 520,185 × 84,134
  4. Step 4: Simplify right side
    346,790x = 43,765,244,790
  5. Step 5: Solve for x
    x = 43,765,244,790/346,790
  6. Step 6: Final answer
    x = 126,201

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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.