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Finding the Fourth Proportional to 299,715.20, 449,443.20 and 149,897.60

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Solution

The fourth proportional to 299,715.20, 449,443.20 and 149,897.60 is: 224,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,715.20 : 449,443.20 = 149,897.60 : x
  2. Step 2: Convert to fraction form
    299,715.20/449,443.20 = 149,897.60/x
  3. Step 3: Cross multiply
    299,715.20x = 449,443.20 × 149,897.60
  4. Step 4: Simplify right side
    299,715.20x = 67,370,457,016.32
  5. Step 5: Solve for x
    x = 67,370,457,016.32/299,715.20
  6. Step 6: Final answer
    x = 224,781.58

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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.