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Finding the Fourth Proportional to 375,874.68, 518,205.28 and 298,606.71

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Solution

The fourth proportional to 375,874.68, 518,205.28 and 298,606.71 is: 411,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,874.68 : 518,205.28 = 298,606.71 : x
  2. Step 2: Convert to fraction form
    375,874.68/518,205.28 = 298,606.71/x
  3. Step 3: Cross multiply
    375,874.68x = 518,205.28 × 298,606.71
  4. Step 4: Simplify right side
    375,874.68x = 154,739,573,765.43
  5. Step 5: Solve for x
    x = 154,739,573,765.43/375,874.68
  6. Step 6: Final answer
    x = 411,678.63

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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.