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Finding the Fourth Proportional to 251,189.78, 346,648.28 and 136,467.28

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Solution

The fourth proportional to 251,189.78, 346,648.28 and 136,467.28 is: 188,328.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,189.78 : 346,648.28 = 136,467.28 : x
  2. Step 2: Convert to fraction form
    251,189.78/346,648.28 = 136,467.28/x
  3. Step 3: Cross multiply
    251,189.78x = 346,648.28 × 136,467.28
  4. Step 4: Simplify right side
    251,189.78x = 47,306,147,888.28
  5. Step 5: Solve for x
    x = 47,306,147,888.28/251,189.78
  6. Step 6: Final answer
    x = 188,328.31

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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.