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Finding the Fourth Proportional to 343,692.34, 515,415.51 and 118,992.46

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Solution

The fourth proportional to 343,692.34, 515,415.51 and 118,992.46 is: 178,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,692.34 : 515,415.51 = 118,992.46 : x
  2. Step 2: Convert to fraction form
    343,692.34/515,415.51 = 118,992.46/x
  3. Step 3: Cross multiply
    343,692.34x = 515,415.51 × 118,992.46
  4. Step 4: Simplify right side
    343,692.34x = 61,330,559,457.05
  5. Step 5: Solve for x
    x = 61,330,559,457.05/343,692.34
  6. Step 6: Final answer
    x = 178,446.11

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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.