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Finding the Fourth Proportional to 318,423.76, 439,424.79 and 175,180.75

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Solution

The fourth proportional to 318,423.76, 439,424.79 and 175,180.75 is: 241,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,423.76 : 439,424.79 = 175,180.75 : x
  2. Step 2: Convert to fraction form
    318,423.76/439,424.79 = 175,180.75/x
  3. Step 3: Cross multiply
    318,423.76x = 439,424.79 × 175,180.75
  4. Step 4: Simplify right side
    318,423.76x = 76,978,764,280.79
  5. Step 5: Solve for x
    x = 76,978,764,280.79/318,423.76
  6. Step 6: Final answer
    x = 241,749.44

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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.