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Finding the Fourth Proportional to 356,893.79, 492,554.57 and 213,653.79

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Solution

The fourth proportional to 356,893.79, 492,554.57 and 213,653.79 is: 294,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,893.79 : 492,554.57 = 213,653.79 : x
  2. Step 2: Convert to fraction form
    356,893.79/492,554.57 = 213,653.79/x
  3. Step 3: Cross multiply
    356,893.79x = 492,554.57 × 213,653.79
  4. Step 4: Simplify right side
    356,893.79x = 105,236,149,594.05
  5. Step 5: Solve for x
    x = 105,236,149,594.05/356,893.79
  6. Step 6: Final answer
    x = 294,866.86

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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.