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Finding the Fourth Proportional to 253,363.28, 349,645.41 and 138,651.89

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Solution

The fourth proportional to 253,363.28, 349,645.41 and 138,651.89 is: 191,341.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,363.28 : 349,645.41 = 138,651.89 : x
  2. Step 2: Convert to fraction form
    253,363.28/349,645.41 = 138,651.89/x
  3. Step 3: Cross multiply
    253,363.28x = 349,645.41 × 138,651.89
  4. Step 4: Simplify right side
    253,363.28x = 48,478,995,178.10
  5. Step 5: Solve for x
    x = 48,478,995,178.10/253,363.28
  6. Step 6: Final answer
    x = 191,341.84

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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.