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Finding the Fourth Proportional to 615,361.28, 849,198.48 and 339,719.12

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Solution

The fourth proportional to 615,361.28, 849,198.48 and 339,719.12 is: 468,812.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,361.28 : 849,198.48 = 339,719.12 : x
  2. Step 2: Convert to fraction form
    615,361.28/849,198.48 = 339,719.12/x
  3. Step 3: Cross multiply
    615,361.28x = 849,198.48 × 339,719.12
  4. Step 4: Simplify right side
    615,361.28x = 288,488,960,330.94
  5. Step 5: Solve for x
    x = 288,488,960,330.94/615,361.28
  6. Step 6: Final answer
    x = 468,812.34

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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.