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Finding the Fourth Proportional to 436,908.10, 655,519.95 and 152,640.63

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Solution

The fourth proportional to 436,908.10, 655,519.95 and 152,640.63 is: 229,016.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,908.10 : 655,519.95 = 152,640.63 : x
  2. Step 2: Convert to fraction form
    436,908.10/655,519.95 = 152,640.63/x
  3. Step 3: Cross multiply
    436,908.10x = 655,519.95 × 152,640.63
  4. Step 4: Simplify right side
    436,908.10x = 100,058,978,145.57
  5. Step 5: Solve for x
    x = 100,058,978,145.57/436,908.10
  6. Step 6: Final answer
    x = 229,016.07

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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.