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Finding the Fourth Proportional to 299,173.17, 448,756.30 and 85,946.31

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Solution

The fourth proportional to 299,173.17, 448,756.30 and 85,946.31 is: 128,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,173.17 : 448,756.30 = 85,946.31 : x
  2. Step 2: Convert to fraction form
    299,173.17/448,756.30 = 85,946.31/x
  3. Step 3: Cross multiply
    299,173.17x = 448,756.30 × 85,946.31
  4. Step 4: Simplify right side
    299,173.17x = 38,568,948,074.25
  5. Step 5: Solve for x
    x = 38,568,948,074.25/299,173.17
  6. Step 6: Final answer
    x = 128,918.47

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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.