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Finding the Fourth Proportional to 251,398.50, 346,936.78 and 136,684.87

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Solution

The fourth proportional to 251,398.50, 346,936.78 and 136,684.87 is: 188,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,398.50 : 346,936.78 = 136,684.87 : x
  2. Step 2: Convert to fraction form
    251,398.50/346,936.78 = 136,684.87/x
  3. Step 3: Cross multiply
    251,398.50x = 346,936.78 × 136,684.87
  4. Step 4: Simplify right side
    251,398.50x = 47,421,006,254.41
  5. Step 5: Solve for x
    x = 47,421,006,254.41/251,398.50
  6. Step 6: Final answer
    x = 188,628.84

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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.