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Finding the Fourth Proportional to 216,521.82, 298,800.46 and 121,028.42

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Solution

The fourth proportional to 216,521.82, 298,800.46 and 121,028.42 is: 167,019.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,521.82 : 298,800.46 = 121,028.42 : x
  2. Step 2: Convert to fraction form
    216,521.82/298,800.46 = 121,028.42/x
  3. Step 3: Cross multiply
    216,521.82x = 298,800.46 × 121,028.42
  4. Step 4: Simplify right side
    216,521.82x = 36,163,347,569.07
  5. Step 5: Solve for x
    x = 36,163,347,569.07/216,521.82
  6. Step 6: Final answer
    x = 167,019.41

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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.