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Finding the Fourth Proportional to 253,393.77, 349,683.36 and 138,672.49

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Solution

The fourth proportional to 253,393.77, 349,683.36 and 138,672.49 is: 191,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,393.77 : 349,683.36 = 138,672.49 : x
  2. Step 2: Convert to fraction form
    253,393.77/349,683.36 = 138,672.49/x
  3. Step 3: Cross multiply
    253,393.77x = 349,683.36 × 138,672.49
  4. Step 4: Simplify right side
    253,393.77x = 48,491,460,494.35
  5. Step 5: Solve for x
    x = 48,491,460,494.35/253,393.77
  6. Step 6: Final answer
    x = 191,368.01

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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.