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Finding the Fourth Proportional to 221,386.54, 332,055.20 and 79,226.08

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Solution

The fourth proportional to 221,386.54, 332,055.20 and 79,226.08 is: 118,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,386.54 : 332,055.20 = 79,226.08 : x
  2. Step 2: Convert to fraction form
    221,386.54/332,055.20 = 79,226.08/x
  3. Step 3: Cross multiply
    221,386.54x = 332,055.20 × 79,226.08
  4. Step 4: Simplify right side
    221,386.54x = 26,307,431,839.62
  5. Step 5: Solve for x
    x = 26,307,431,839.62/221,386.54
  6. Step 6: Final answer
    x = 118,830.31

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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.