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Finding the Fourth Proportional to 561,262.67, 774,542.31 and 303,139.60

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Solution

The fourth proportional to 561,262.67, 774,542.31 and 303,139.60 is: 418,332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,262.67 : 774,542.31 = 303,139.60 : x
  2. Step 2: Convert to fraction form
    561,262.67/774,542.31 = 303,139.60/x
  3. Step 3: Cross multiply
    561,262.67x = 774,542.31 × 303,139.60
  4. Step 4: Simplify right side
    561,262.67x = 234,794,446,036.48
  5. Step 5: Solve for x
    x = 234,794,446,036.48/561,262.67
  6. Step 6: Final answer
    x = 418,332.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.