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Finding the Fourth Proportional to 407,425.25, 611,540.27 and 305,870.23

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Solution

The fourth proportional to 407,425.25, 611,540.27 and 305,870.23 is: 459,107.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,425.25 : 611,540.27 = 305,870.23 : x
  2. Step 2: Convert to fraction form
    407,425.25/611,540.27 = 305,870.23/x
  3. Step 3: Cross multiply
    407,425.25x = 611,540.27 × 305,870.23
  4. Step 4: Simplify right side
    407,425.25x = 187,051,963,038.66
  5. Step 5: Solve for x
    x = 187,051,963,038.66/407,425.25
  6. Step 6: Final answer
    x = 459,107.44

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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.