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Finding the Fourth Proportional to 379,802, 524,081.40 and 210,013.04

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Solution

The fourth proportional to 379,802, 524,081.40 and 210,013.04 is: 289,792.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,802 : 524,081.40 = 210,013.04 : x
  2. Step 2: Convert to fraction form
    379,802/524,081.40 = 210,013.04/x
  3. Step 3: Cross multiply
    379,802x = 524,081.40 × 210,013.04
  4. Step 4: Simplify right side
    379,802x = 110,063,928,021.46
  5. Step 5: Solve for x
    x = 110,063,928,021.46/379,802
  6. Step 6: Final answer
    x = 289,792.91

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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.