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Finding the Fourth Proportional to 253,301.88, 349,555.33 and 138,578.45

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Solution

The fourth proportional to 253,301.88, 349,555.33 and 138,578.45 is: 191,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,301.88 : 349,555.33 = 138,578.45 : x
  2. Step 2: Convert to fraction form
    253,301.88/349,555.33 = 138,578.45/x
  3. Step 3: Cross multiply
    253,301.88x = 349,555.33 × 138,578.45
  4. Step 4: Simplify right side
    253,301.88x = 48,440,834,246.08
  5. Step 5: Solve for x
    x = 48,440,834,246.08/253,301.88
  6. Step 6: Final answer
    x = 191,237.56

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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.