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Finding the Fourth Proportional to 253,481.16, 349,798.58 and 138,756.82

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Solution

The fourth proportional to 253,481.16, 349,798.58 and 138,756.82 is: 191,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,481.16 : 349,798.58 = 138,756.82 : x
  2. Step 2: Convert to fraction form
    253,481.16/349,798.58 = 138,756.82/x
  3. Step 3: Cross multiply
    253,481.16x = 349,798.58 × 138,756.82
  4. Step 4: Simplify right side
    253,481.16x = 48,536,938,601.32
  5. Step 5: Solve for x
    x = 48,536,938,601.32/253,481.16
  6. Step 6: Final answer
    x = 191,481.44

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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.