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Finding the Fourth Proportional to 503,649.09, 755,503.25 and 143,792.28

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Solution

The fourth proportional to 503,649.09, 755,503.25 and 143,792.28 is: 215,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,649.09 : 755,503.25 = 143,792.28 : x
  2. Step 2: Convert to fraction form
    503,649.09/755,503.25 = 143,792.28/x
  3. Step 3: Cross multiply
    503,649.09x = 755,503.25 × 143,792.28
  4. Step 4: Simplify right side
    503,649.09x = 108,635,534,864.91
  5. Step 5: Solve for x
    x = 108,635,534,864.91/503,649.09
  6. Step 6: Final answer
    x = 215,696.88

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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.