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Finding the Fourth Proportional to 383,034.97, 528,567.71 and 210,919.33

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Solution

The fourth proportional to 383,034.97, 528,567.71 and 210,919.33 is: 291,057.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,034.97 : 528,567.71 = 210,919.33 : x
  2. Step 2: Convert to fraction form
    383,034.97/528,567.71 = 210,919.33/x
  3. Step 3: Cross multiply
    383,034.97x = 528,567.71 × 210,919.33
  4. Step 4: Simplify right side
    383,034.97x = 111,485,146,458.71
  5. Step 5: Solve for x
    x = 111,485,146,458.71/383,034.97
  6. Step 6: Final answer
    x = 291,057.36

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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.