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Finding the Fourth Proportional to 201,689.20, 302,533.80 and 61,429.60

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Solution

The fourth proportional to 201,689.20, 302,533.80 and 61,429.60 is: 92,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,689.20 : 302,533.80 = 61,429.60 : x
  2. Step 2: Convert to fraction form
    201,689.20/302,533.80 = 61,429.60/x
  3. Step 3: Cross multiply
    201,689.20x = 302,533.80 × 61,429.60
  4. Step 4: Simplify right side
    201,689.20x = 18,584,530,320.48
  5. Step 5: Solve for x
    x = 18,584,530,320.48/201,689.20
  6. Step 6: Final answer
    x = 92,144.40

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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.