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Finding the Fourth Proportional to 449,308.72, 620,042.88 and 245,359.64

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Solution

The fourth proportional to 449,308.72, 620,042.88 and 245,359.64 is: 338,594.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,308.72 : 620,042.88 = 245,359.64 : x
  2. Step 2: Convert to fraction form
    449,308.72/620,042.88 = 245,359.64/x
  3. Step 3: Cross multiply
    449,308.72x = 620,042.88 × 245,359.64
  4. Step 4: Simplify right side
    449,308.72x = 152,133,497,046.31
  5. Step 5: Solve for x
    x = 152,133,497,046.31/449,308.72
  6. Step 6: Final answer
    x = 338,594.58

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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.