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Finding the Fourth Proportional to 253,493.82, 349,818.46 and 138,771.09

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Solution

The fourth proportional to 253,493.82, 349,818.46 and 138,771.09 is: 191,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,493.82 : 349,818.46 = 138,771.09 : x
  2. Step 2: Convert to fraction form
    253,493.82/349,818.46 = 138,771.09/x
  3. Step 3: Cross multiply
    253,493.82x = 349,818.46 × 138,771.09
  4. Step 4: Simplify right side
    253,493.82x = 48,544,688,996.32
  5. Step 5: Solve for x
    x = 48,544,688,996.32/253,493.82
  6. Step 6: Final answer
    x = 191,502.46

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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.