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Finding the Fourth Proportional to 418,763.40, 628,145.10 and 250,801.80

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Solution

The fourth proportional to 418,763.40, 628,145.10 and 250,801.80 is: 376,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,763.40 : 628,145.10 = 250,801.80 : x
  2. Step 2: Convert to fraction form
    418,763.40/628,145.10 = 250,801.80/x
  3. Step 3: Cross multiply
    418,763.40x = 628,145.10 × 250,801.80
  4. Step 4: Simplify right side
    418,763.40x = 157,539,921,741.18
  5. Step 5: Solve for x
    x = 157,539,921,741.18/418,763.40
  6. Step 6: Final answer
    x = 376,202.70

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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.