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Finding the Fourth Proportional to 243,036.40, 364,554.60 and 223,790.80

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Solution

The fourth proportional to 243,036.40, 364,554.60 and 223,790.80 is: 335,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,036.40 : 364,554.60 = 223,790.80 : x
  2. Step 2: Convert to fraction form
    243,036.40/364,554.60 = 223,790.80/x
  3. Step 3: Cross multiply
    243,036.40x = 364,554.60 × 223,790.80
  4. Step 4: Simplify right side
    243,036.40x = 81,583,965,577.68
  5. Step 5: Solve for x
    x = 81,583,965,577.68/243,036.40
  6. Step 6: Final answer
    x = 335,686.20

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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.