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Finding the Fourth Proportional to 271,855.40, 407,841.46 and 105,643.40

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Solution

The fourth proportional to 271,855.40, 407,841.46 and 105,643.40 is: 158,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,855.40 : 407,841.46 = 105,643.40 : x
  2. Step 2: Convert to fraction form
    271,855.40/407,841.46 = 105,643.40/x
  3. Step 3: Cross multiply
    271,855.40x = 407,841.46 × 105,643.40
  4. Step 4: Simplify right side
    271,855.40x = 43,085,758,495.36
  5. Step 5: Solve for x
    x = 43,085,758,495.36/271,855.40
  6. Step 6: Final answer
    x = 158,487.78

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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.