Home / 509,710.38-764,087.76-172,515.07

Finding the Fourth Proportional to 509,710.38, 764,087.76 and 172,515.07

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Solution

The fourth proportional to 509,710.38, 764,087.76 and 172,515.07 is: 258,610.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,710.38 : 764,087.76 = 172,515.07 : x
  2. Step 2: Convert to fraction form
    509,710.38/764,087.76 = 172,515.07/x
  3. Step 3: Cross multiply
    509,710.38x = 764,087.76 × 172,515.07
  4. Step 4: Simplify right side
    509,710.38x = 131,816,653,402.54
  5. Step 5: Solve for x
    x = 131,816,653,402.54/509,710.38
  6. Step 6: Final answer
    x = 258,610.89

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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.