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Finding the Fourth Proportional to 279,345.01, 385,504.86 and 158,491.39

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Solution

The fourth proportional to 279,345.01, 385,504.86 and 158,491.39 is: 218,723.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,345.01 : 385,504.86 = 158,491.39 : x
  2. Step 2: Convert to fraction form
    279,345.01/385,504.86 = 158,491.39/x
  3. Step 3: Cross multiply
    279,345.01x = 385,504.86 × 158,491.39
  4. Step 4: Simplify right side
    279,345.01x = 61,099,199,185.63
  5. Step 5: Solve for x
    x = 61,099,199,185.63/279,345.01
  6. Step 6: Final answer
    x = 218,723.08

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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.