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Finding the Fourth Proportional to 301,687.20, 452,530.80 and 91,335.60

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Solution

The fourth proportional to 301,687.20, 452,530.80 and 91,335.60 is: 137,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,687.20 : 452,530.80 = 91,335.60 : x
  2. Step 2: Convert to fraction form
    301,687.20/452,530.80 = 91,335.60/x
  3. Step 3: Cross multiply
    301,687.20x = 452,530.80 × 91,335.60
  4. Step 4: Simplify right side
    301,687.20x = 41,332,172,136.48
  5. Step 5: Solve for x
    x = 41,332,172,136.48/301,687.20
  6. Step 6: Final answer
    x = 137,003.40

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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.