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Finding the Fourth Proportional to 253,269.72, 349,499.88 and 138,554.28

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Solution

The fourth proportional to 253,269.72, 349,499.88 and 138,554.28 is: 191,198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,269.72 : 349,499.88 = 138,554.28 : x
  2. Step 2: Convert to fraction form
    253,269.72/349,499.88 = 138,554.28/x
  3. Step 3: Cross multiply
    253,269.72x = 349,499.88 × 138,554.28
  4. Step 4: Simplify right side
    253,269.72x = 48,424,704,233.49
  5. Step 5: Solve for x
    x = 48,424,704,233.49/253,269.72
  6. Step 6: Final answer
    x = 191,198.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.