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Finding the Fourth Proportional to 253,127.27, 349,315.52 and 138,406.49

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Solution

The fourth proportional to 253,127.27, 349,315.52 and 138,406.49 is: 191,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,127.27 : 349,315.52 = 138,406.49 : x
  2. Step 2: Convert to fraction form
    253,127.27/349,315.52 = 138,406.49/x
  3. Step 3: Cross multiply
    253,127.27x = 349,315.52 × 138,406.49
  4. Step 4: Simplify right side
    253,127.27x = 48,347,535,206.98
  5. Step 5: Solve for x
    x = 48,347,535,206.98/253,127.27
  6. Step 6: Final answer
    x = 191,000.90

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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.