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Finding the Fourth Proportional to 354,865.60, 531,423.60 and 235,892.80

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Solution

The fourth proportional to 354,865.60, 531,423.60 and 235,892.80 is: 353,257.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,865.60 : 531,423.60 = 235,892.80 : x
  2. Step 2: Convert to fraction form
    354,865.60/531,423.60 = 235,892.80/x
  3. Step 3: Cross multiply
    354,865.60x = 531,423.60 × 235,892.80
  4. Step 4: Simplify right side
    354,865.60x = 125,359,000,990.08
  5. Step 5: Solve for x
    x = 125,359,000,990.08/354,865.60
  6. Step 6: Final answer
    x = 353,257.69

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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.