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Finding the Fourth Proportional to 303,503.10, 455,254.65 and 277,915.20

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Solution

The fourth proportional to 303,503.10, 455,254.65 and 277,915.20 is: 416,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,503.10 : 455,254.65 = 277,915.20 : x
  2. Step 2: Convert to fraction form
    303,503.10/455,254.65 = 277,915.20/x
  3. Step 3: Cross multiply
    303,503.10x = 455,254.65 × 277,915.20
  4. Step 4: Simplify right side
    303,503.10x = 126,522,187,105.68
  5. Step 5: Solve for x
    x = 126,522,187,105.68/303,503.10
  6. Step 6: Final answer
    x = 416,872.80

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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.