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Finding the Fourth Proportional to 253,579.13, 349,950.13 and 140,401.88

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Solution

The fourth proportional to 253,579.13, 349,950.13 and 140,401.88 is: 193,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,579.13 : 349,950.13 = 140,401.88 : x
  2. Step 2: Convert to fraction form
    253,579.13/349,950.13 = 140,401.88/x
  3. Step 3: Cross multiply
    253,579.13x = 349,950.13 × 140,401.88
  4. Step 4: Simplify right side
    253,579.13x = 49,133,656,158.24
  5. Step 5: Solve for x
    x = 49,133,656,158.24/253,579.13
  6. Step 6: Final answer
    x = 193,760.65

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1.5x scale

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.