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Finding the Fourth Proportional to 326,205.68, 489,516.40 and 148,730.40

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Solution

The fourth proportional to 326,205.68, 489,516.40 and 148,730.40 is: 223,190.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,205.68 : 489,516.40 = 148,730.40 : x
  2. Step 2: Convert to fraction form
    326,205.68/489,516.40 = 148,730.40/x
  3. Step 3: Cross multiply
    326,205.68x = 489,516.40 × 148,730.40
  4. Step 4: Simplify right side
    326,205.68x = 72,805,969,978.56
  5. Step 5: Solve for x
    x = 72,805,969,978.56/326,205.68
  6. Step 6: Final answer
    x = 223,190.38

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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.