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Finding the Fourth Proportional to 393,615.60, 590,423.40 and 363,202.80

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Solution

The fourth proportional to 393,615.60, 590,423.40 and 363,202.80 is: 544,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,615.60 : 590,423.40 = 363,202.80 : x
  2. Step 2: Convert to fraction form
    393,615.60/590,423.40 = 363,202.80/x
  3. Step 3: Cross multiply
    393,615.60x = 590,423.40 × 363,202.80
  4. Step 4: Simplify right side
    393,615.60x = 214,443,432,065.52
  5. Step 5: Solve for x
    x = 214,443,432,065.52/393,615.60
  6. Step 6: Final answer
    x = 544,804.20

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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.