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Finding the Fourth Proportional to 424,418, 585,725.64 and 245,570

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Solution

The fourth proportional to 424,418, 585,725.64 and 245,570 is: 338,903.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,418 : 585,725.64 = 245,570 : x
  2. Step 2: Convert to fraction form
    424,418/585,725.64 = 245,570/x
  3. Step 3: Cross multiply
    424,418x = 585,725.64 × 245,570
  4. Step 4: Simplify right side
    424,418x = 143,836,645,414.80
  5. Step 5: Solve for x
    x = 143,836,645,414.80/424,418
  6. Step 6: Final answer
    x = 338,903.26

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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.