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Finding the Fourth Proportional to 215,351.76, 322,817.80 and 103,002.64

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Solution

The fourth proportional to 215,351.76, 322,817.80 and 103,002.64 is: 154,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,351.76 : 322,817.80 = 103,002.64 : x
  2. Step 2: Convert to fraction form
    215,351.76/322,817.80 = 103,002.64/x
  3. Step 3: Cross multiply
    215,351.76x = 322,817.80 × 103,002.64
  4. Step 4: Simplify right side
    215,351.76x = 33,251,085,638.99
  5. Step 5: Solve for x
    x = 33,251,085,638.99/215,351.76
  6. Step 6: Final answer
    x = 154,403.59

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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.