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Finding the Fourth Proportional to 328,692.76, 493,093.68 and 115,405.32

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Solution

The fourth proportional to 328,692.76, 493,093.68 and 115,405.32 is: 173,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,692.76 : 493,093.68 = 115,405.32 : x
  2. Step 2: Convert to fraction form
    328,692.76/493,093.68 = 115,405.32/x
  3. Step 3: Cross multiply
    328,692.76x = 493,093.68 × 115,405.32
  4. Step 4: Simplify right side
    328,692.76x = 56,905,633,930.38
  5. Step 5: Solve for x
    x = 56,905,633,930.38/328,692.76
  6. Step 6: Final answer
    x = 173,127.13

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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.