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Finding the Fourth Proportional to 438,865.80, 605,875.84 and 275,692.52

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Solution

The fourth proportional to 438,865.80, 605,875.84 and 275,692.52 is: 380,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,865.80 : 605,875.84 = 275,692.52 : x
  2. Step 2: Convert to fraction form
    438,865.80/605,875.84 = 275,692.52/x
  3. Step 3: Cross multiply
    438,865.80x = 605,875.84 × 275,692.52
  4. Step 4: Simplify right side
    438,865.80x = 167,035,437,136.72
  5. Step 5: Solve for x
    x = 167,035,437,136.72/438,865.80
  6. Step 6: Final answer
    x = 380,607.09

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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.