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Finding the Fourth Proportional to 408,087.45, 611,888.18 and 250,429.05

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Solution

The fourth proportional to 408,087.45, 611,888.18 and 250,429.05 is: 375,494.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,087.45 : 611,888.18 = 250,429.05 : x
  2. Step 2: Convert to fraction form
    408,087.45/611,888.18 = 250,429.05/x
  3. Step 3: Cross multiply
    408,087.45x = 611,888.18 × 250,429.05
  4. Step 4: Simplify right side
    408,087.45x = 153,234,574,371.48
  5. Step 5: Solve for x
    x = 153,234,574,371.48/408,087.45
  6. Step 6: Final answer
    x = 375,494.45

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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.