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Finding the Fourth Proportional to 253,921,306.80, 356,296,045.20 and 253,921,306.80

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Solution

The fourth proportional to 253,921,306.80, 356,296,045.20 and 253,921,306.80 is: 356,296,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,921,306.80 : 356,296,045.20 = 253,921,306.80 : x
  2. Step 2: Convert to fraction form
    253,921,306.80/356,296,045.20 = 253,921,306.80/x
  3. Step 3: Cross multiply
    253,921,306.80x = 356,296,045.20 × 253,921,306.80
  4. Step 4: Simplify right side
    253,921,306.80x = 90,471,157,404,855,872
  5. Step 5: Solve for x
    x = 90,471,157,404,855,872/253,921,306.80
  6. Step 6: Final answer
    x = 356,296,045.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.