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Finding the Fourth Proportional to 204,915.80, 307,373.70 and 203,603.60

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Solution

The fourth proportional to 204,915.80, 307,373.70 and 203,603.60 is: 305,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,915.80 : 307,373.70 = 203,603.60 : x
  2. Step 2: Convert to fraction form
    204,915.80/307,373.70 = 203,603.60/x
  3. Step 3: Cross multiply
    204,915.80x = 307,373.70 × 203,603.60
  4. Step 4: Simplify right side
    204,915.80x = 62,582,391,865.32
  5. Step 5: Solve for x
    x = 62,582,391,865.32/204,915.80
  6. Step 6: Final answer
    x = 305,405.40

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1.5x scale

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.