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Finding the Fourth Proportional to 251,419.60, 346,953.36 and 136,696.60

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Solution

The fourth proportional to 251,419.60, 346,953.36 and 136,696.60 is: 188,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,419.60 : 346,953.36 = 136,696.60 : x
  2. Step 2: Convert to fraction form
    251,419.60/346,953.36 = 136,696.60/x
  3. Step 3: Cross multiply
    251,419.60x = 346,953.36 × 136,696.60
  4. Step 4: Simplify right side
    251,419.60x = 47,427,344,670.58
  5. Step 5: Solve for x
    x = 47,427,344,670.58/251,419.60
  6. Step 6: Final answer
    x = 188,638.22

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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.