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Finding the Fourth Proportional to 660,340.70, 990,511.05 and 161,704.70

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Solution

The fourth proportional to 660,340.70, 990,511.05 and 161,704.70 is: 242,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,340.70 : 990,511.05 = 161,704.70 : x
  2. Step 2: Convert to fraction form
    660,340.70/990,511.05 = 161,704.70/x
  3. Step 3: Cross multiply
    660,340.70x = 990,511.05 × 161,704.70
  4. Step 4: Simplify right side
    660,340.70x = 160,170,292,186.94
  5. Step 5: Solve for x
    x = 160,170,292,186.94/660,340.70
  6. Step 6: Final answer
    x = 242,557.05

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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.