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Finding the Fourth Proportional to 251,358.78, 346,881 and 136,643.94

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Solution

The fourth proportional to 251,358.78, 346,881 and 136,643.94 is: 188,571.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,358.78 : 346,881 = 136,643.94 : x
  2. Step 2: Convert to fraction form
    251,358.78/346,881 = 136,643.94/x
  3. Step 3: Cross multiply
    251,358.78x = 346,881 × 136,643.94
  4. Step 4: Simplify right side
    251,358.78x = 47,399,186,551.14
  5. Step 5: Solve for x
    x = 47,399,186,551.14/251,358.78
  6. Step 6: Final answer
    x = 188,571.84

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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.