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Finding the Fourth Proportional to 219,589.28, 303,030.72 and 118,987.28

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Solution

The fourth proportional to 219,589.28, 303,030.72 and 118,987.28 is: 164,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,589.28 : 303,030.72 = 118,987.28 : x
  2. Step 2: Convert to fraction form
    219,589.28/303,030.72 = 118,987.28/x
  3. Step 3: Cross multiply
    219,589.28x = 303,030.72 × 118,987.28
  4. Step 4: Simplify right side
    219,589.28x = 36,056,800,750.45
  5. Step 5: Solve for x
    x = 36,056,800,750.45/219,589.28
  6. Step 6: Final answer
    x = 164,201.10

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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.