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Finding the Fourth Proportional to 393,402.40, 590,103.60 and 251,684.80

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Solution

The fourth proportional to 393,402.40, 590,103.60 and 251,684.80 is: 377,527.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,402.40 : 590,103.60 = 251,684.80 : x
  2. Step 2: Convert to fraction form
    393,402.40/590,103.60 = 251,684.80/x
  3. Step 3: Cross multiply
    393,402.40x = 590,103.60 × 251,684.80
  4. Step 4: Simplify right side
    393,402.40x = 148,520,106,545.28
  5. Step 5: Solve for x
    x = 148,520,106,545.28/393,402.40
  6. Step 6: Final answer
    x = 377,527.20

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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.