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Finding the Fourth Proportional to 253,491.32, 349,815.02 and 138,768.59

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Solution

The fourth proportional to 253,491.32, 349,815.02 and 138,768.59 is: 191,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,491.32 : 349,815.02 = 138,768.59 : x
  2. Step 2: Convert to fraction form
    253,491.32/349,815.02 = 138,768.59/x
  3. Step 3: Cross multiply
    253,491.32x = 349,815.02 × 138,768.59
  4. Step 4: Simplify right side
    253,491.32x = 48,543,334,643.30
  5. Step 5: Solve for x
    x = 48,543,334,643.30/253,491.32
  6. Step 6: Final answer
    x = 191,499.01

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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.