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Finding the Fourth Proportional to 326,451.63, 489,680.55 and 98,749.02

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Solution

The fourth proportional to 326,451.63, 489,680.55 and 98,749.02 is: 148,124.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,451.63 : 489,680.55 = 98,749.02 : x
  2. Step 2: Convert to fraction form
    326,451.63/489,680.55 = 98,749.02/x
  3. Step 3: Cross multiply
    326,451.63x = 489,680.55 × 98,749.02
  4. Step 4: Simplify right side
    326,451.63x = 48,355,474,425.56
  5. Step 5: Solve for x
    x = 48,355,474,425.56/326,451.63
  6. Step 6: Final answer
    x = 148,124.47

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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.