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Finding the Fourth Proportional to 253,199.99, 349,401.83 and 138,455.88

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Solution

The fourth proportional to 253,199.99, 349,401.83 and 138,455.88 is: 191,061.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,199.99 : 349,401.83 = 138,455.88 : x
  2. Step 2: Convert to fraction form
    253,199.99/349,401.83 = 138,455.88/x
  3. Step 3: Cross multiply
    253,199.99x = 349,401.83 × 138,455.88
  4. Step 4: Simplify right side
    253,199.99x = 48,376,737,153.98
  5. Step 5: Solve for x
    x = 48,376,737,153.98/253,199.99
  6. Step 6: Final answer
    x = 191,061.37

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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.