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Finding the Fourth Proportional to 301,405.64, 415,940.18 and 165,440.36

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Solution

The fourth proportional to 301,405.64, 415,940.18 and 165,440.36 is: 228,307.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,405.64 : 415,940.18 = 165,440.36 : x
  2. Step 2: Convert to fraction form
    301,405.64/415,940.18 = 165,440.36/x
  3. Step 3: Cross multiply
    301,405.64x = 415,940.18 × 165,440.36
  4. Step 4: Simplify right side
    301,405.64x = 68,813,293,117.66
  5. Step 5: Solve for x
    x = 68,813,293,117.66/301,405.64
  6. Step 6: Final answer
    x = 228,307.91

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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.