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Finding the Fourth Proportional to 404,900.28, 607,718.97 and 215,519.67

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Solution

The fourth proportional to 404,900.28, 607,718.97 and 215,519.67 is: 323,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,900.28 : 607,718.97 = 215,519.67 : x
  2. Step 2: Convert to fraction form
    404,900.28/607,718.97 = 215,519.67/x
  3. Step 3: Cross multiply
    404,900.28x = 607,718.97 × 215,519.67
  4. Step 4: Simplify right side
    404,900.28x = 130,975,391,867.14
  5. Step 5: Solve for x
    x = 130,975,391,867.14/404,900.28
  6. Step 6: Final answer
    x = 323,475.68

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1.5x scale

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.