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Finding the Fourth Proportional to 263,580.63, 363,740.72 and 142,721.88

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Solution

The fourth proportional to 263,580.63, 363,740.72 and 142,721.88 is: 196,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,580.63 : 363,740.72 = 142,721.88 : x
  2. Step 2: Convert to fraction form
    263,580.63/363,740.72 = 142,721.88/x
  3. Step 3: Cross multiply
    263,580.63x = 363,740.72 × 142,721.88
  4. Step 4: Simplify right side
    263,580.63x = 51,913,759,390.95
  5. Step 5: Solve for x
    x = 51,913,759,390.95/263,580.63
  6. Step 6: Final answer
    x = 196,955.90

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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.