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Finding the Fourth Proportional to 306,979.20, 460,468.80 and 262,692.45

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Solution

The fourth proportional to 306,979.20, 460,468.80 and 262,692.45 is: 394,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,979.20 : 460,468.80 = 262,692.45 : x
  2. Step 2: Convert to fraction form
    306,979.20/460,468.80 = 262,692.45/x
  3. Step 3: Cross multiply
    306,979.20x = 460,468.80 × 262,692.45
  4. Step 4: Simplify right side
    306,979.20x = 120,961,677,220.56
  5. Step 5: Solve for x
    x = 120,961,677,220.56/306,979.20
  6. Step 6: Final answer
    x = 394,038.68

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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.