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Finding the Fourth Proportional to 436,075.86, 654,113.80 and 136,579.88

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Solution

The fourth proportional to 436,075.86, 654,113.80 and 136,579.88 is: 204,869.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,075.86 : 654,113.80 = 136,579.88 : x
  2. Step 2: Convert to fraction form
    436,075.86/654,113.80 = 136,579.88/x
  3. Step 3: Cross multiply
    436,075.86x = 654,113.80 × 136,579.88
  4. Step 4: Simplify right side
    436,075.86x = 89,338,786,116.35
  5. Step 5: Solve for x
    x = 89,338,786,116.35/436,075.86
  6. Step 6: Final answer
    x = 204,869.83

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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.