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Finding the Fourth Proportional to 560,201.20, 773,143.04 and 318,520

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Solution

The fourth proportional to 560,201.20, 773,143.04 and 318,520 is: 439,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,201.20 : 773,143.04 = 318,520 : x
  2. Step 2: Convert to fraction form
    560,201.20/773,143.04 = 318,520/x
  3. Step 3: Cross multiply
    560,201.20x = 773,143.04 × 318,520
  4. Step 4: Simplify right side
    560,201.20x = 246,261,521,100.80
  5. Step 5: Solve for x
    x = 246,261,521,100.80/560,201.20
  6. Step 6: Final answer
    x = 439,594.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.