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Finding the Fourth Proportional to 375,268.16, 518,541.60 and 300,434.24

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Solution

The fourth proportional to 375,268.16, 518,541.60 and 300,434.24 is: 415,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,268.16 : 518,541.60 = 300,434.24 : x
  2. Step 2: Convert to fraction form
    375,268.16/518,541.60 = 300,434.24/x
  3. Step 3: Cross multiply
    375,268.16x = 518,541.60 × 300,434.24
  4. Step 4: Simplify right side
    375,268.16x = 155,787,651,504.38
  5. Step 5: Solve for x
    x = 155,787,651,504.38/375,268.16
  6. Step 6: Final answer
    x = 415,136.88

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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.