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Finding the Fourth Proportional to 271,020, 374,007.60 and 151,788

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Solution

The fourth proportional to 271,020, 374,007.60 and 151,788 is: 209,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,020 : 374,007.60 = 151,788 : x
  2. Step 2: Convert to fraction form
    271,020/374,007.60 = 151,788/x
  3. Step 3: Cross multiply
    271,020x = 374,007.60 × 151,788
  4. Step 4: Simplify right side
    271,020x = 56,769,865,588.80
  5. Step 5: Solve for x
    x = 56,769,865,588.80/271,020
  6. Step 6: Final answer
    x = 209,467.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.