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Finding the Fourth Proportional to 383,303.49, 528,969.32 and 213,537.61

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Solution

The fourth proportional to 383,303.49, 528,969.32 and 213,537.61 is: 294,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,303.49 : 528,969.32 = 213,537.61 : x
  2. Step 2: Convert to fraction form
    383,303.49/528,969.32 = 213,537.61/x
  3. Step 3: Cross multiply
    383,303.49x = 528,969.32 × 213,537.61
  4. Step 4: Simplify right side
    383,303.49x = 112,954,844,356.13
  5. Step 5: Solve for x
    x = 112,954,844,356.13/383,303.49
  6. Step 6: Final answer
    x = 294,687.75

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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.