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Finding the Fourth Proportional to 436,129.40, 653,708.10 and 169,801.40

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Solution

The fourth proportional to 436,129.40, 653,708.10 and 169,801.40 is: 254,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,129.40 : 653,708.10 = 169,801.40 : x
  2. Step 2: Convert to fraction form
    436,129.40/653,708.10 = 169,801.40/x
  3. Step 3: Cross multiply
    436,129.40x = 653,708.10 × 169,801.40
  4. Step 4: Simplify right side
    436,129.40x = 111,000,550,571.34
  5. Step 5: Solve for x
    x = 111,000,550,571.34/436,129.40
  6. Step 6: Final answer
    x = 254,512.88

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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.