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Finding the Fourth Proportional to 277,915.73, 383,473.17 and 155,410.38

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Solution

The fourth proportional to 277,915.73, 383,473.17 and 155,410.38 is: 214,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,915.73 : 383,473.17 = 155,410.38 : x
  2. Step 2: Convert to fraction form
    277,915.73/383,473.17 = 155,410.38/x
  3. Step 3: Cross multiply
    277,915.73x = 383,473.17 × 155,410.38
  4. Step 4: Simplify right side
    277,915.73x = 59,595,711,069.50
  5. Step 5: Solve for x
    x = 59,595,711,069.50/277,915.73
  6. Step 6: Final answer
    x = 214,438.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.