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Finding the Fourth Proportional to 326,406.08, 489,256.00 and 136,969.36

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Solution

The fourth proportional to 326,406.08, 489,256.00 and 136,969.36 is: 205,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,406.08 : 489,256.00 = 136,969.36 : x
  2. Step 2: Convert to fraction form
    326,406.08/489,256.00 = 136,969.36/x
  3. Step 3: Cross multiply
    326,406.08x = 489,256.00 × 136,969.36
  4. Step 4: Simplify right side
    326,406.08x = 67,013,079,630.60
  5. Step 5: Solve for x
    x = 67,013,079,630.60/326,406.08
  6. Step 6: Final answer
    x = 205,305.85

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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.