Home / 326,049.20-489,316.80-168,196.40

Finding the Fourth Proportional to 326,049.20, 489,316.80 and 168,196.40

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Solution

The fourth proportional to 326,049.20, 489,316.80 and 168,196.40 is: 252,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,049.20 : 489,316.80 = 168,196.40 : x
  2. Step 2: Convert to fraction form
    326,049.20/489,316.80 = 168,196.40/x
  3. Step 3: Cross multiply
    326,049.20x = 489,316.80 × 168,196.40
  4. Step 4: Simplify right side
    326,049.20x = 82,301,324,219.52
  5. Step 5: Solve for x
    x = 82,301,324,219.52/326,049.20
  6. Step 6: Final answer
    x = 252,419.95

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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.