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Finding the Fourth Proportional to 660,381.60, 990,572.40 and 161,745.60

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Solution

The fourth proportional to 660,381.60, 990,572.40 and 161,745.60 is: 242,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,381.60 : 990,572.40 = 161,745.60 : x
  2. Step 2: Convert to fraction form
    660,381.60/990,572.40 = 161,745.60/x
  3. Step 3: Cross multiply
    660,381.60x = 990,572.40 × 161,745.60
  4. Step 4: Simplify right side
    660,381.60x = 160,220,727,181.44
  5. Step 5: Solve for x
    x = 160,220,727,181.44/660,381.60
  6. Step 6: Final answer
    x = 242,618.40

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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.