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Finding the Fourth Proportional to 326,614.05, 489,921.12 and 101,993.72

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Solution

The fourth proportional to 326,614.05, 489,921.12 and 101,993.72 is: 152,990.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,614.05 : 489,921.12 = 101,993.72 : x
  2. Step 2: Convert to fraction form
    326,614.05/489,921.12 = 101,993.72/x
  3. Step 3: Cross multiply
    326,614.05x = 489,921.12 × 101,993.72
  4. Step 4: Simplify right side
    326,614.05x = 49,968,875,085.76
  5. Step 5: Solve for x
    x = 49,968,875,085.76/326,614.05
  6. Step 6: Final answer
    x = 152,990.59

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Similar ratio
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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.