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Finding the Fourth Proportional to 611,078.20, 916,670.63 and 251,270.94

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Solution

The fourth proportional to 611,078.20, 916,670.63 and 251,270.94 is: 376,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,078.20 : 916,670.63 = 251,270.94 : x
  2. Step 2: Convert to fraction form
    611,078.20/916,670.63 = 251,270.94/x
  3. Step 3: Cross multiply
    611,078.20x = 916,670.63 × 251,270.94
  4. Step 4: Simplify right side
    611,078.20x = 230,332,690,870.49
  5. Step 5: Solve for x
    x = 230,332,690,870.49/611,078.20
  6. Step 6: Final answer
    x = 376,928.34

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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.