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Finding the Fourth Proportional to 326,675.10, 489,908.90 and 105,007.26

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Solution

The fourth proportional to 326,675.10, 489,908.90 and 105,007.26 is: 157,477.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,675.10 : 489,908.90 = 105,007.26 : x
  2. Step 2: Convert to fraction form
    326,675.10/489,908.90 = 105,007.26/x
  3. Step 3: Cross multiply
    326,675.10x = 489,908.90 × 105,007.26
  4. Step 4: Simplify right side
    326,675.10x = 51,443,991,238.61
  5. Step 5: Solve for x
    x = 51,443,991,238.61/326,675.10
  6. Step 6: Final answer
    x = 157,477.54

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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.