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Finding the Fourth Proportional to 611,007.30, 916,142.81 and 273,986.96

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Solution

The fourth proportional to 611,007.30, 916,142.81 and 273,986.96 is: 410,815.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,007.30 : 916,142.81 = 273,986.96 : x
  2. Step 2: Convert to fraction form
    611,007.30/916,142.81 = 273,986.96/x
  3. Step 3: Cross multiply
    611,007.30x = 916,142.81 × 273,986.96
  4. Step 4: Simplify right side
    611,007.30x = 251,011,177,487.11
  5. Step 5: Solve for x
    x = 251,011,177,487.11/611,007.30
  6. Step 6: Final answer
    x = 410,815.35

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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.