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Finding the Fourth Proportional to 498,383.25, 687,768.88 and 272,028.75

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Solution

The fourth proportional to 498,383.25, 687,768.88 and 272,028.75 is: 375,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,383.25 : 687,768.88 = 272,028.75 : x
  2. Step 2: Convert to fraction form
    498,383.25/687,768.88 = 272,028.75/x
  3. Step 3: Cross multiply
    498,383.25x = 687,768.88 × 272,028.75
  4. Step 4: Simplify right side
    498,383.25x = 187,092,908,715.30
  5. Step 5: Solve for x
    x = 187,092,908,715.30/498,383.25
  6. Step 6: Final answer
    x = 375,399.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.