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Finding the Fourth Proportional to 404,672.40, 607,178.70 and 217,465.20

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Solution

The fourth proportional to 404,672.40, 607,178.70 and 217,465.20 is: 326,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,672.40 : 607,178.70 = 217,465.20 : x
  2. Step 2: Convert to fraction form
    404,672.40/607,178.70 = 217,465.20/x
  3. Step 3: Cross multiply
    404,672.40x = 607,178.70 × 217,465.20
  4. Step 4: Simplify right side
    404,672.40x = 132,040,237,431.24
  5. Step 5: Solve for x
    x = 132,040,237,431.24/404,672.40
  6. Step 6: Final answer
    x = 326,289.21

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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.