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Finding the Fourth Proportional to 299,215.72, 448,395.90 and 219,706.12

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Solution

The fourth proportional to 299,215.72, 448,395.90 and 219,706.12 is: 329,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,215.72 : 448,395.90 = 219,706.12 : x
  2. Step 2: Convert to fraction form
    299,215.72/448,395.90 = 219,706.12/x
  3. Step 3: Cross multiply
    299,215.72x = 448,395.90 × 219,706.12
  4. Step 4: Simplify right side
    299,215.72x = 98,515,323,412.91
  5. Step 5: Solve for x
    x = 98,515,323,412.91/299,215.72
  6. Step 6: Final answer
    x = 329,245.15

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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.