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Finding the Fourth Proportional to 253,390.88, 349,690.06 and 140,213.63

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Solution

The fourth proportional to 253,390.88, 349,690.06 and 140,213.63 is: 193,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,390.88 : 349,690.06 = 140,213.63 : x
  2. Step 2: Convert to fraction form
    253,390.88/349,690.06 = 140,213.63/x
  3. Step 3: Cross multiply
    253,390.88x = 349,690.06 × 140,213.63
  4. Step 4: Simplify right side
    253,390.88x = 49,031,313,737.01
  5. Step 5: Solve for x
    x = 49,031,313,737.01/253,390.88
  6. Step 6: Final answer
    x = 193,500.70

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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.