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Finding the Fourth Proportional to 448,016.60, 671,791.60 and 211,295.72

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Solution

The fourth proportional to 448,016.60, 671,791.60 and 211,295.72 is: 316,833.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,016.60 : 671,791.60 = 211,295.72 : x
  2. Step 2: Convert to fraction form
    448,016.60/671,791.60 = 211,295.72/x
  3. Step 3: Cross multiply
    448,016.60x = 671,791.60 × 211,295.72
  4. Step 4: Simplify right side
    448,016.60x = 141,946,689,811.95
  5. Step 5: Solve for x
    x = 141,946,689,811.95/448,016.60
  6. Step 6: Final answer
    x = 316,833.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.