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Finding the Fourth Proportional to 326,610.77, 489,725.46 and 126,697.55

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Solution

The fourth proportional to 326,610.77, 489,725.46 and 126,697.55 is: 189,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,610.77 : 489,725.46 = 126,697.55 : x
  2. Step 2: Convert to fraction form
    326,610.77/489,725.46 = 126,697.55/x
  3. Step 3: Cross multiply
    326,610.77x = 489,725.46 × 126,697.55
  4. Step 4: Simplify right side
    326,610.77x = 62,047,013,506.00
  5. Step 5: Solve for x
    x = 62,047,013,506.00/326,610.77
  6. Step 6: Final answer
    x = 189,972.35

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1.5x scale

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.