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Finding the Fourth Proportional to 404,092.80, 606,139.20 and 309,614.40

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Solution

The fourth proportional to 404,092.80, 606,139.20 and 309,614.40 is: 464,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,092.80 : 606,139.20 = 309,614.40 : x
  2. Step 2: Convert to fraction form
    404,092.80/606,139.20 = 309,614.40/x
  3. Step 3: Cross multiply
    404,092.80x = 606,139.20 × 309,614.40
  4. Step 4: Simplify right side
    404,092.80x = 187,669,424,724.48
  5. Step 5: Solve for x
    x = 187,669,424,724.48/404,092.80
  6. Step 6: Final answer
    x = 464,421.60

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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.