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Finding the Fourth Proportional to 408,847.40, 612,104.70 and 251,383.40

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Solution

The fourth proportional to 408,847.40, 612,104.70 and 251,383.40 is: 376,357.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,847.40 : 612,104.70 = 251,383.40 : x
  2. Step 2: Convert to fraction form
    408,847.40/612,104.70 = 251,383.40/x
  3. Step 3: Cross multiply
    408,847.40x = 612,104.70 × 251,383.40
  4. Step 4: Simplify right side
    408,847.40x = 153,872,960,641.98
  5. Step 5: Solve for x
    x = 153,872,960,641.98/408,847.40
  6. Step 6: Final answer
    x = 376,357.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.