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Finding the Fourth Proportional to 220,603.36, 330,771.39 and 99,001.60

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Solution

The fourth proportional to 220,603.36, 330,771.39 and 99,001.60 is: 148,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,603.36 : 330,771.39 = 99,001.60 : x
  2. Step 2: Convert to fraction form
    220,603.36/330,771.39 = 99,001.60/x
  3. Step 3: Cross multiply
    220,603.36x = 330,771.39 × 99,001.60
  4. Step 4: Simplify right side
    220,603.36x = 32,746,896,844.22
  5. Step 5: Solve for x
    x = 32,746,896,844.22/220,603.36
  6. Step 6: Final answer
    x = 148,442.42

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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.