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Finding the Fourth Proportional to 608,911.80, 913,367.70 and 188,316.60

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Solution

The fourth proportional to 608,911.80, 913,367.70 and 188,316.60 is: 282,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,911.80 : 913,367.70 = 188,316.60 : x
  2. Step 2: Convert to fraction form
    608,911.80/913,367.70 = 188,316.60/x
  3. Step 3: Cross multiply
    608,911.80x = 913,367.70 × 188,316.60
  4. Step 4: Simplify right side
    608,911.80x = 172,002,299,813.82
  5. Step 5: Solve for x
    x = 172,002,299,813.82/608,911.80
  6. Step 6: Final answer
    x = 282,474.90

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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.