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Finding the Fourth Proportional to 493,328.80, 739,993.20 and 177,817.60

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Solution

The fourth proportional to 493,328.80, 739,993.20 and 177,817.60 is: 266,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,328.80 : 739,993.20 = 177,817.60 : x
  2. Step 2: Convert to fraction form
    493,328.80/739,993.20 = 177,817.60/x
  3. Step 3: Cross multiply
    493,328.80x = 739,993.20 × 177,817.60
  4. Step 4: Simplify right side
    493,328.80x = 131,583,814,840.32
  5. Step 5: Solve for x
    x = 131,583,814,840.32/493,328.80
  6. Step 6: Final answer
    x = 266,726.40

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Similar ratio
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1.5x scale

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.