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Finding the Fourth Proportional to 251,390.84, 346,926.20 and 136,677.20

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Solution

The fourth proportional to 251,390.84, 346,926.20 and 136,677.20 is: 188,618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,390.84 : 346,926.20 = 136,677.20 : x
  2. Step 2: Convert to fraction form
    251,390.84/346,926.20 = 136,677.20/x
  3. Step 3: Cross multiply
    251,390.84x = 346,926.20 × 136,677.20
  4. Step 4: Simplify right side
    251,390.84x = 47,416,899,204.62
  5. Step 5: Solve for x
    x = 47,416,899,204.62/251,390.84
  6. Step 6: Final answer
    x = 188,618.25

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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.