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Finding the Fourth Proportional to 251,334.96, 346,833.46 and 138,156.90

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Solution

The fourth proportional to 251,334.96, 346,833.46 and 138,156.90 is: 190,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,334.96 : 346,833.46 = 138,156.90 : x
  2. Step 2: Convert to fraction form
    251,334.96/346,833.46 = 138,156.90/x
  3. Step 3: Cross multiply
    251,334.96x = 346,833.46 × 138,156.90
  4. Step 4: Simplify right side
    251,334.96x = 47,917,435,649.87
  5. Step 5: Solve for x
    x = 47,917,435,649.87/251,334.96
  6. Step 6: Final answer
    x = 190,651.69

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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.