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Finding the Fourth Proportional to 363,090.80, 545,948.40 and 355,217.60

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Solution

The fourth proportional to 363,090.80, 545,948.40 and 355,217.60 is: 534,110.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,090.80 : 545,948.40 = 355,217.60 : x
  2. Step 2: Convert to fraction form
    363,090.80/545,948.40 = 355,217.60/x
  3. Step 3: Cross multiply
    363,090.80x = 545,948.40 × 355,217.60
  4. Step 4: Simplify right side
    363,090.80x = 193,930,480,371.84
  5. Step 5: Solve for x
    x = 193,930,480,371.84/363,090.80
  6. Step 6: Final answer
    x = 534,110.15

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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.