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Finding the Fourth Proportional to 356,693.88, 492,253.08 and 213,426.48

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Solution

The fourth proportional to 356,693.88, 492,253.08 and 213,426.48 is: 294,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,693.88 : 492,253.08 = 213,426.48 : x
  2. Step 2: Convert to fraction form
    356,693.88/492,253.08 = 213,426.48/x
  3. Step 3: Cross multiply
    356,693.88x = 492,253.08 × 213,426.48
  4. Step 4: Simplify right side
    356,693.88x = 105,059,842,133.56
  5. Step 5: Solve for x
    x = 105,059,842,133.56/356,693.88
  6. Step 6: Final answer
    x = 294,537.83

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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.