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Finding the Fourth Proportional to 448,861.31, 619,653.08 and 279,150.11

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Solution

The fourth proportional to 448,861.31, 619,653.08 and 279,150.11 is: 385,366.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,861.31 : 619,653.08 = 279,150.11 : x
  2. Step 2: Convert to fraction form
    448,861.31/619,653.08 = 279,150.11/x
  3. Step 3: Cross multiply
    448,861.31x = 619,653.08 × 279,150.11
  4. Step 4: Simplify right side
    448,861.31x = 172,976,225,443.84
  5. Step 5: Solve for x
    x = 172,976,225,443.84/448,861.31
  6. Step 6: Final answer
    x = 385,366.75

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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.