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Finding the Fourth Proportional to 223,386.30, 335,079.45 and 128,907.90

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Solution

The fourth proportional to 223,386.30, 335,079.45 and 128,907.90 is: 193,361.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,386.30 : 335,079.45 = 128,907.90 : x
  2. Step 2: Convert to fraction form
    223,386.30/335,079.45 = 128,907.90/x
  3. Step 3: Cross multiply
    223,386.30x = 335,079.45 × 128,907.90
  4. Step 4: Simplify right side
    223,386.30x = 43,194,388,232.66
  5. Step 5: Solve for x
    x = 43,194,388,232.66/223,386.30
  6. Step 6: Final answer
    x = 193,361.85

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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.