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Finding the Fourth Proportional to 277,235.20, 388,916.60 and 277,235.20

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Solution

The fourth proportional to 277,235.20, 388,916.60 and 277,235.20 is: 388,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,235.20 : 388,916.60 = 277,235.20 : x
  2. Step 2: Convert to fraction form
    277,235.20/388,916.60 = 277,235.20/x
  3. Step 3: Cross multiply
    277,235.20x = 388,916.60 × 277,235.20
  4. Step 4: Simplify right side
    277,235.20x = 107,821,371,384.32
  5. Step 5: Solve for x
    x = 107,821,371,384.32/277,235.20
  6. Step 6: Final answer
    x = 388,916.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.