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Finding the Fourth Proportional to 326,636.96, 489,764.68 and 126,723.74

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Solution

The fourth proportional to 326,636.96, 489,764.68 and 126,723.74 is: 190,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,636.96 : 489,764.68 = 126,723.74 : x
  2. Step 2: Convert to fraction form
    326,636.96/489,764.68 = 126,723.74/x
  3. Step 3: Cross multiply
    326,636.96x = 489,764.68 × 126,723.74
  4. Step 4: Simplify right side
    326,636.96x = 62,064,809,203.87
  5. Step 5: Solve for x
    x = 62,064,809,203.87/326,636.96
  6. Step 6: Final answer
    x = 190,011.60

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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.