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Finding the Fourth Proportional to 487,692.95, 731,749.62 and 203,439.45

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Solution

The fourth proportional to 487,692.95, 731,749.62 and 203,439.45 is: 305,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,692.95 : 731,749.62 = 203,439.45 : x
  2. Step 2: Convert to fraction form
    487,692.95/731,749.62 = 203,439.45/x
  3. Step 3: Cross multiply
    487,692.95x = 731,749.62 × 203,439.45
  4. Step 4: Simplify right side
    487,692.95x = 148,866,739,049.20
  5. Step 5: Solve for x
    x = 148,866,739,049.20/487,692.95
  6. Step 6: Final answer
    x = 305,246.85

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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.