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Finding the Fourth Proportional to 659,239.20, 988,801.20 and 216,007.20

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Solution

The fourth proportional to 659,239.20, 988,801.20 and 216,007.20 is: 323,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,239.20 : 988,801.20 = 216,007.20 : x
  2. Step 2: Convert to fraction form
    659,239.20/988,801.20 = 216,007.20/x
  3. Step 3: Cross multiply
    659,239.20x = 988,801.20 × 216,007.20
  4. Step 4: Simplify right side
    659,239.20x = 213,588,178,568.64
  5. Step 5: Solve for x
    x = 213,588,178,568.64/659,239.20
  6. Step 6: Final answer
    x = 323,991.93

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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.