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Finding the Fourth Proportional to 404,838.40, 606,285.60 and 217,436.80

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Solution

The fourth proportional to 404,838.40, 606,285.60 and 217,436.80 is: 325,633.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,838.40 : 606,285.60 = 217,436.80 : x
  2. Step 2: Convert to fraction form
    404,838.40/606,285.60 = 217,436.80/x
  3. Step 3: Cross multiply
    404,838.40x = 606,285.60 × 217,436.80
  4. Step 4: Simplify right side
    404,838.40x = 131,828,800,750.08
  5. Step 5: Solve for x
    x = 131,828,800,750.08/404,838.40
  6. Step 6: Final answer
    x = 325,633.14

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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.