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Finding the Fourth Proportional to 436,966.84, 655,579.86 and 137,488.78

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Solution

The fourth proportional to 436,966.84, 655,579.86 and 137,488.78 is: 206,273.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,966.84 : 655,579.86 = 137,488.78 : x
  2. Step 2: Convert to fraction form
    436,966.84/655,579.86 = 137,488.78/x
  3. Step 3: Cross multiply
    436,966.84x = 655,579.86 × 137,488.78
  4. Step 4: Simplify right side
    436,966.84x = 90,134,875,143.97
  5. Step 5: Solve for x
    x = 90,134,875,143.97/436,966.84
  6. Step 6: Final answer
    x = 206,273.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.