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Finding the Fourth Proportional to 251,369.95, 346,892.78 and 136,648.81

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Solution

The fourth proportional to 251,369.95, 346,892.78 and 136,648.81 is: 188,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,369.95 : 346,892.78 = 136,648.81 : x
  2. Step 2: Convert to fraction form
    251,369.95/346,892.78 = 136,648.81/x
  3. Step 3: Cross multiply
    251,369.95x = 346,892.78 × 136,648.81
  4. Step 4: Simplify right side
    251,369.95x = 47,402,485,679.85
  5. Step 5: Solve for x
    x = 47,402,485,679.85/251,369.95
  6. Step 6: Final answer
    x = 188,576.58

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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.