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Finding the Fourth Proportional to 326,513.06, 489,676.62 and 126,790.82

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Solution

The fourth proportional to 326,513.06, 489,676.62 and 126,790.82 is: 190,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,513.06 : 489,676.62 = 126,790.82 : x
  2. Step 2: Convert to fraction form
    326,513.06/489,676.62 = 126,790.82/x
  3. Step 3: Cross multiply
    326,513.06x = 489,676.62 × 126,790.82
  4. Step 4: Simplify right side
    326,513.06x = 62,086,500,184.63
  5. Step 5: Solve for x
    x = 62,086,500,184.63/326,513.06
  6. Step 6: Final answer
    x = 190,150.13

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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.