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Finding the Fourth Proportional to 299,168.08, 448,407.60 and 121,480

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Solution

The fourth proportional to 299,168.08, 448,407.60 and 121,480 is: 182,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,168.08 : 448,407.60 = 121,480 : x
  2. Step 2: Convert to fraction form
    299,168.08/448,407.60 = 121,480/x
  3. Step 3: Cross multiply
    299,168.08x = 448,407.60 × 121,480
  4. Step 4: Simplify right side
    299,168.08x = 54,472,555,248
  5. Step 5: Solve for x
    x = 54,472,555,248/299,168.08
  6. Step 6: Final answer
    x = 182,080.10

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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.