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Finding the Fourth Proportional to 403,271.32, 605,327.33 and 178,789.39

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Solution

The fourth proportional to 403,271.32, 605,327.33 and 178,789.39 is: 268,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,271.32 : 605,327.33 = 178,789.39 : x
  2. Step 2: Convert to fraction form
    403,271.32/605,327.33 = 178,789.39/x
  3. Step 3: Cross multiply
    403,271.32x = 605,327.33 × 178,789.39
  4. Step 4: Simplify right side
    403,271.32x = 108,226,104,081.03
  5. Step 5: Solve for x
    x = 108,226,104,081.03/403,271.32
  6. Step 6: Final answer
    x = 268,370.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.