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Finding the Fourth Proportional to 375,554, 518,264.52 and 216,578

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Solution

The fourth proportional to 375,554, 518,264.52 and 216,578 is: 298,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,554 : 518,264.52 = 216,578 : x
  2. Step 2: Convert to fraction form
    375,554/518,264.52 = 216,578/x
  3. Step 3: Cross multiply
    375,554x = 518,264.52 × 216,578
  4. Step 4: Simplify right side
    375,554x = 112,244,693,212.56
  5. Step 5: Solve for x
    x = 112,244,693,212.56/375,554
  6. Step 6: Final answer
    x = 298,877.64

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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.