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Finding the Fourth Proportional to 201,815.60, 302,723.40 and 83,717.60

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Solution

The fourth proportional to 201,815.60, 302,723.40 and 83,717.60 is: 125,576.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,815.60 : 302,723.40 = 83,717.60 : x
  2. Step 2: Convert to fraction form
    201,815.60/302,723.40 = 83,717.60/x
  3. Step 3: Cross multiply
    201,815.60x = 302,723.40 × 83,717.60
  4. Step 4: Simplify right side
    201,815.60x = 25,343,276,511.84
  5. Step 5: Solve for x
    x = 25,343,276,511.84/201,815.60
  6. Step 6: Final answer
    x = 125,576.40

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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.