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Finding the Fourth Proportional to 515,771.99, 773,667.53 and 178,823.62

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Solution

The fourth proportional to 515,771.99, 773,667.53 and 178,823.62 is: 268,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,771.99 : 773,667.53 = 178,823.62 : x
  2. Step 2: Convert to fraction form
    515,771.99/773,667.53 = 178,823.62/x
  3. Step 3: Cross multiply
    515,771.99x = 773,667.53 × 178,823.62
  4. Step 4: Simplify right side
    515,771.99x = 138,350,028,391.06
  5. Step 5: Solve for x
    x = 138,350,028,391.06/515,771.99
  6. Step 6: Final answer
    x = 268,238.74

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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.