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Finding the Fourth Proportional to 251,338.96, 346,838.98 and 138,160.90

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Solution

The fourth proportional to 251,338.96, 346,838.98 and 138,160.90 is: 190,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,338.96 : 346,838.98 = 138,160.90 : x
  2. Step 2: Convert to fraction form
    251,338.96/346,838.98 = 138,160.90/x
  3. Step 3: Cross multiply
    251,338.96x = 346,838.98 × 138,160.90
  4. Step 4: Simplify right side
    251,338.96x = 47,919,583,206.88
  5. Step 5: Solve for x
    x = 47,919,583,206.88/251,338.96
  6. Step 6: Final answer
    x = 190,657.21

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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.