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Finding the Fourth Proportional to 404,313.80, 605,595.90 and 217,106.60

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Solution

The fourth proportional to 404,313.80, 605,595.90 and 217,106.60 is: 325,190.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,313.80 : 605,595.90 = 217,106.60 : x
  2. Step 2: Convert to fraction form
    404,313.80/605,595.90 = 217,106.60/x
  3. Step 3: Cross multiply
    404,313.80x = 605,595.90 × 217,106.60
  4. Step 4: Simplify right side
    404,313.80x = 131,478,866,822.94
  5. Step 5: Solve for x
    x = 131,478,866,822.94/404,313.80
  6. Step 6: Final answer
    x = 325,190.15

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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.