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Finding the Fourth Proportional to 271,310.40, 406,684.80 and 121,622.40

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Solution

The fourth proportional to 271,310.40, 406,684.80 and 121,622.40 is: 182,307.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,310.40 : 406,684.80 = 121,622.40 : x
  2. Step 2: Convert to fraction form
    271,310.40/406,684.80 = 121,622.40/x
  3. Step 3: Cross multiply
    271,310.40x = 406,684.80 × 121,622.40
  4. Step 4: Simplify right side
    271,310.40x = 49,461,981,419.52
  5. Step 5: Solve for x
    x = 49,461,981,419.52/271,310.40
  6. Step 6: Final answer
    x = 182,307.72

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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.