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Finding the Fourth Proportional to 404,214.80, 605,447.40 and 217,007.60

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Solution

The fourth proportional to 404,214.80, 605,447.40 and 217,007.60 is: 325,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,214.80 : 605,447.40 = 217,007.60 : x
  2. Step 2: Convert to fraction form
    404,214.80/605,447.40 = 217,007.60/x
  3. Step 3: Cross multiply
    404,214.80x = 605,447.40 × 217,007.60
  4. Step 4: Simplify right side
    404,214.80x = 131,386,687,200.24
  5. Step 5: Solve for x
    x = 131,386,687,200.24/404,214.80
  6. Step 6: Final answer
    x = 325,041.75

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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.