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Finding the Fourth Proportional to 318,693.60, 439,793.28 and 175,450.56

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Solution

The fourth proportional to 318,693.60, 439,793.28 and 175,450.56 is: 242,119.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,693.60 : 439,793.28 = 175,450.56 : x
  2. Step 2: Convert to fraction form
    318,693.60/439,793.28 = 175,450.56/x
  3. Step 3: Cross multiply
    318,693.60x = 439,793.28 × 175,450.56
  4. Step 4: Simplify right side
    318,693.60x = 77,161,977,260.24
  5. Step 5: Solve for x
    x = 77,161,977,260.24/318,693.60
  6. Step 6: Final answer
    x = 242,119.63

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1.5x scale

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.