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Finding the Fourth Proportional to 254,503.49, 381,692.15 and 86,020.08

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Solution

The fourth proportional to 254,503.49, 381,692.15 and 86,020.08 is: 129,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,503.49 : 381,692.15 = 86,020.08 : x
  2. Step 2: Convert to fraction form
    254,503.49/381,692.15 = 86,020.08/x
  3. Step 3: Cross multiply
    254,503.49x = 381,692.15 × 86,020.08
  4. Step 4: Simplify right side
    254,503.49x = 32,833,187,739.50
  5. Step 5: Solve for x
    x = 32,833,187,739.50/254,503.49
  6. Step 6: Final answer
    x = 129,008.79

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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.