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Finding the Fourth Proportional to 375,435.12, 518,107.20 and 205,658.28

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Solution

The fourth proportional to 375,435.12, 518,107.20 and 205,658.28 is: 283,812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,435.12 : 518,107.20 = 205,658.28 : x
  2. Step 2: Convert to fraction form
    375,435.12/518,107.20 = 205,658.28/x
  3. Step 3: Cross multiply
    375,435.12x = 518,107.20 × 205,658.28
  4. Step 4: Simplify right side
    375,435.12x = 106,553,035,607.62
  5. Step 5: Solve for x
    x = 106,553,035,607.62/375,435.12
  6. Step 6: Final answer
    x = 283,812.12

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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.