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Finding the Fourth Proportional to 326,102.40, 489,150.72 and 104,486.40

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Solution

The fourth proportional to 326,102.40, 489,150.72 and 104,486.40 is: 156,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,102.40 : 489,150.72 = 104,486.40 : x
  2. Step 2: Convert to fraction form
    326,102.40/489,150.72 = 104,486.40/x
  3. Step 3: Cross multiply
    326,102.40x = 489,150.72 × 104,486.40
  4. Step 4: Simplify right side
    326,102.40x = 51,109,597,790.21
  5. Step 5: Solve for x
    x = 51,109,597,790.21/326,102.40
  6. Step 6: Final answer
    x = 156,728.68

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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.