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Finding the Fourth Proportional to 545,695.38, 818,537.31 and 213,268.50

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Solution

The fourth proportional to 545,695.38, 818,537.31 and 213,268.50 is: 319,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,695.38 : 818,537.31 = 213,268.50 : x
  2. Step 2: Convert to fraction form
    545,695.38/818,537.31 = 213,268.50/x
  3. Step 3: Cross multiply
    545,695.38x = 818,537.31 × 213,268.50
  4. Step 4: Simplify right side
    545,695.38x = 174,568,224,297.74
  5. Step 5: Solve for x
    x = 174,568,224,297.74/545,695.38
  6. Step 6: Final answer
    x = 319,900.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.