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Finding the Fourth Proportional to 201,815.40, 302,723.10 and 83,447.40

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Solution

The fourth proportional to 201,815.40, 302,723.10 and 83,447.40 is: 125,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,815.40 : 302,723.10 = 83,447.40 : x
  2. Step 2: Convert to fraction form
    201,815.40/302,723.10 = 83,447.40/x
  3. Step 3: Cross multiply
    201,815.40x = 302,723.10 × 83,447.40
  4. Step 4: Simplify right side
    201,815.40x = 25,261,455,614.94
  5. Step 5: Solve for x
    x = 25,261,455,614.94/201,815.40
  6. Step 6: Final answer
    x = 125,171.10

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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.