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Finding the Fourth Proportional to 554,040, 831,176.64 and 221,616

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Solution

The fourth proportional to 554,040, 831,176.64 and 221,616 is: 332,470.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,040 : 831,176.64 = 221,616 : x
  2. Step 2: Convert to fraction form
    554,040/831,176.64 = 221,616/x
  3. Step 3: Cross multiply
    554,040x = 831,176.64 × 221,616
  4. Step 4: Simplify right side
    554,040x = 184,202,042,250.24
  5. Step 5: Solve for x
    x = 184,202,042,250.24/554,040
  6. Step 6: Final answer
    x = 332,470.66

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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.