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Finding the Fourth Proportional to 321,663.40, 443,886.93 and 185,692.75

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Solution

The fourth proportional to 321,663.40, 443,886.93 and 185,692.75 is: 256,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,663.40 : 443,886.93 = 185,692.75 : x
  2. Step 2: Convert to fraction form
    321,663.40/443,886.93 = 185,692.75/x
  3. Step 3: Cross multiply
    321,663.40x = 443,886.93 × 185,692.75
  4. Step 4: Simplify right side
    321,663.40x = 82,426,584,720.76
  5. Step 5: Solve for x
    x = 82,426,584,720.76/321,663.40
  6. Step 6: Final answer
    x = 256,251.05

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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.