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Finding the Fourth Proportional to 356,968.52, 492,808.42 and 275,717.68

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Solution

The fourth proportional to 356,968.52, 492,808.42 and 275,717.68 is: 380,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,968.52 : 492,808.42 = 275,717.68 : x
  2. Step 2: Convert to fraction form
    356,968.52/492,808.42 = 275,717.68/x
  3. Step 3: Cross multiply
    356,968.52x = 492,808.42 × 275,717.68
  4. Step 4: Simplify right side
    356,968.52x = 135,875,994,246.87
  5. Step 5: Solve for x
    x = 135,875,994,246.87/356,968.52
  6. Step 6: Final answer
    x = 380,638.59

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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.