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Finding the Fourth Proportional to 291,304.36, 436,645.50 and 207,945.64

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Solution

The fourth proportional to 291,304.36, 436,645.50 and 207,945.64 is: 311,696.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,304.36 : 436,645.50 = 207,945.64 : x
  2. Step 2: Convert to fraction form
    291,304.36/436,645.50 = 207,945.64/x
  3. Step 3: Cross multiply
    291,304.36x = 436,645.50 × 207,945.64
  4. Step 4: Simplify right side
    291,304.36x = 90,798,527,950.62
  5. Step 5: Solve for x
    x = 90,798,527,950.62/291,304.36
  6. Step 6: Final answer
    x = 311,696.43

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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.