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Finding the Fourth Proportional to 289,632.54, 399,048.66 and 216,706.98

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Solution

The fourth proportional to 289,632.54, 399,048.66 and 216,706.98 is: 298,573.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,632.54 : 399,048.66 = 216,706.98 : x
  2. Step 2: Convert to fraction form
    289,632.54/399,048.66 = 216,706.98/x
  3. Step 3: Cross multiply
    289,632.54x = 399,048.66 × 216,706.98
  4. Step 4: Simplify right side
    289,632.54x = 86,476,629,981.65
  5. Step 5: Solve for x
    x = 86,476,629,981.65/289,632.54
  6. Step 6: Final answer
    x = 298,573.60

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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.