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Finding the Fourth Proportional to 253,130.80, 379,696.20 and 253,130.80

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Solution

The fourth proportional to 253,130.80, 379,696.20 and 253,130.80 is: 379,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,130.80 : 379,696.20 = 253,130.80 : x
  2. Step 2: Convert to fraction form
    253,130.80/379,696.20 = 253,130.80/x
  3. Step 3: Cross multiply
    253,130.80x = 379,696.20 × 253,130.80
  4. Step 4: Simplify right side
    253,130.80x = 96,112,802,862.96
  5. Step 5: Solve for x
    x = 96,112,802,862.96/253,130.80
  6. Step 6: Final answer
    x = 379,696.20

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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.