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Finding the Fourth Proportional to 481,394.16, 664,626.48 and 309,389.04

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Solution

The fourth proportional to 481,394.16, 664,626.48 and 309,389.04 is: 427,151.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,394.16 : 664,626.48 = 309,389.04 : x
  2. Step 2: Convert to fraction form
    481,394.16/664,626.48 = 309,389.04/x
  3. Step 3: Cross multiply
    481,394.16x = 664,626.48 × 309,389.04
  4. Step 4: Simplify right side
    481,394.16x = 205,628,148,605.78
  5. Step 5: Solve for x
    x = 205,628,148,605.78/481,394.16
  6. Step 6: Final answer
    x = 427,151.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.