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Finding the Fourth Proportional to 418,883.85, 628,332.71 and 202,616.89

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Solution

The fourth proportional to 418,883.85, 628,332.71 and 202,616.89 is: 303,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,883.85 : 628,332.71 = 202,616.89 : x
  2. Step 2: Convert to fraction form
    418,883.85/628,332.71 = 202,616.89/x
  3. Step 3: Cross multiply
    418,883.85x = 628,332.71 × 202,616.89
  4. Step 4: Simplify right side
    418,883.85x = 127,310,817,001.56
  5. Step 5: Solve for x
    x = 127,310,817,001.56/418,883.85
  6. Step 6: Final answer
    x = 303,928.68

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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.