Home / 368,971.05-509,184.18-215,975.82

Finding the Fourth Proportional to 368,971.05, 509,184.18 and 215,975.82

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Solution

The fourth proportional to 368,971.05, 509,184.18 and 215,975.82 is: 298,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,971.05 : 509,184.18 = 215,975.82 : x
  2. Step 2: Convert to fraction form
    368,971.05/509,184.18 = 215,975.82/x
  3. Step 3: Cross multiply
    368,971.05x = 509,184.18 × 215,975.82
  4. Step 4: Simplify right side
    368,971.05x = 109,971,470,806.53
  5. Step 5: Solve for x
    x = 109,971,470,806.53/368,971.05
  6. Step 6: Final answer
    x = 298,049.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.