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Finding the Fourth Proportional to 393,246.75, 542,632.82 and 218,775.68

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Solution

The fourth proportional to 393,246.75, 542,632.82 and 218,775.68 is: 301,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,246.75 : 542,632.82 = 218,775.68 : x
  2. Step 2: Convert to fraction form
    393,246.75/542,632.82 = 218,775.68/x
  3. Step 3: Cross multiply
    393,246.75x = 542,632.82 × 218,775.68
  4. Step 4: Simplify right side
    393,246.75x = 118,714,866,696.57
  5. Step 5: Solve for x
    x = 118,714,866,696.57/393,246.75
  6. Step 6: Final answer
    x = 301,883.91

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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.