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Finding the Fourth Proportional to 318,205.50, 439,112.34 and 174,964.54

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Solution

The fourth proportional to 318,205.50, 439,112.34 and 174,964.54 is: 241,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,205.50 : 439,112.34 = 174,964.54 : x
  2. Step 2: Convert to fraction form
    318,205.50/439,112.34 = 174,964.54/x
  3. Step 3: Cross multiply
    318,205.50x = 439,112.34 × 174,964.54
  4. Step 4: Simplify right side
    318,205.50x = 76,829,088,576.42
  5. Step 5: Solve for x
    x = 76,829,088,576.42/318,205.50
  6. Step 6: Final answer
    x = 241,444.88

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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.