Home / 509,394.48-764,047.68-172,427.88

Finding the Fourth Proportional to 509,394.48, 764,047.68 and 172,427.88

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Solution

The fourth proportional to 509,394.48, 764,047.68 and 172,427.88 is: 258,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,394.48 : 764,047.68 = 172,427.88 : x
  2. Step 2: Convert to fraction form
    509,394.48/764,047.68 = 172,427.88/x
  3. Step 3: Cross multiply
    509,394.48x = 764,047.68 × 172,427.88
  4. Step 4: Simplify right side
    509,394.48x = 131,743,121,681.32
  5. Step 5: Solve for x
    x = 131,743,121,681.32/509,394.48
  6. Step 6: Final answer
    x = 258,626.91

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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.