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Finding the Fourth Proportional to 243,090.60, 364,694.58 and 91,288.92

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Solution

The fourth proportional to 243,090.60, 364,694.58 and 91,288.92 is: 136,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,090.60 : 364,694.58 = 91,288.92 : x
  2. Step 2: Convert to fraction form
    243,090.60/364,694.58 = 91,288.92/x
  3. Step 3: Cross multiply
    243,090.60x = 364,694.58 × 91,288.92
  4. Step 4: Simplify right side
    243,090.60x = 33,292,574,338.05
  5. Step 5: Solve for x
    x = 33,292,574,338.05/243,090.60
  6. Step 6: Final answer
    x = 136,955.42

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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.