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Finding the Fourth Proportional to 263,669.52, 395,643.72 and 143,813

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Solution

The fourth proportional to 263,669.52, 395,643.72 and 143,813 is: 215,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,669.52 : 395,643.72 = 143,813 : x
  2. Step 2: Convert to fraction form
    263,669.52/395,643.72 = 143,813/x
  3. Step 3: Cross multiply
    263,669.52x = 395,643.72 × 143,813
  4. Step 4: Simplify right side
    263,669.52x = 56,898,710,304.36
  5. Step 5: Solve for x
    x = 56,898,710,304.36/263,669.52
  6. Step 6: Final answer
    x = 215,795.55

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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.