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Finding the Fourth Proportional to 251,431.54, 346,971.68 and 136,709.27

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Solution

The fourth proportional to 251,431.54, 346,971.68 and 136,709.27 is: 188,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,431.54 : 346,971.68 = 136,709.27 : x
  2. Step 2: Convert to fraction form
    251,431.54/346,971.68 = 136,709.27/x
  3. Step 3: Cross multiply
    251,431.54x = 346,971.68 × 136,709.27
  4. Step 4: Simplify right side
    251,431.54x = 47,434,243,348.62
  5. Step 5: Solve for x
    x = 47,434,243,348.62/251,431.54
  6. Step 6: Final answer
    x = 188,656.69

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1.5x scale

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.