Home / 200,085,431.40-300,128,147.10-166,073,207.40

Finding the Fourth Proportional to 200,085,431.40, 300,128,147.10 and 166,073,207.40

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Solution

The fourth proportional to 200,085,431.40, 300,128,147.10 and 166,073,207.40 is: 249,109,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,085,431.40 : 300,128,147.10 = 166,073,207.40 : x
  2. Step 2: Convert to fraction form
    200,085,431.40/300,128,147.10 = 166,073,207.40/x
  3. Step 3: Cross multiply
    200,085,431.40x = 300,128,147.10 × 166,073,207.40
  4. Step 4: Simplify right side
    200,085,431.40x = 49,843,244,019,916,016
  5. Step 5: Solve for x
    x = 49,843,244,019,916,016/200,085,431.40
  6. Step 6: Final answer
    x = 249,109,811.10

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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.