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Finding the Fourth Proportional to 277,225.20, 388,902.60 and 277,225.20

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Solution

The fourth proportional to 277,225.20, 388,902.60 and 277,225.20 is: 388,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,225.20 : 388,902.60 = 277,225.20 : x
  2. Step 2: Convert to fraction form
    277,225.20/388,902.60 = 277,225.20/x
  3. Step 3: Cross multiply
    277,225.20x = 388,902.60 × 277,225.20
  4. Step 4: Simplify right side
    277,225.20x = 107,813,601,065.52
  5. Step 5: Solve for x
    x = 107,813,601,065.52/277,225.20
  6. Step 6: Final answer
    x = 388,902.60

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1.5x scale

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.