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Finding the Fourth Proportional to 383,274.82, 528,352.14 and 245,439.16

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Solution

The fourth proportional to 383,274.82, 528,352.14 and 245,439.16 is: 338,342.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,274.82 : 528,352.14 = 245,439.16 : x
  2. Step 2: Convert to fraction form
    383,274.82/528,352.14 = 245,439.16/x
  3. Step 3: Cross multiply
    383,274.82x = 528,352.14 × 245,439.16
  4. Step 4: Simplify right side
    383,274.82x = 129,678,305,425.80
  5. Step 5: Solve for x
    x = 129,678,305,425.80/383,274.82
  6. Step 6: Final answer
    x = 338,342.88

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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.