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Finding the Fourth Proportional to 403,279.74, 605,009.61 and 122,818.62

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Solution

The fourth proportional to 403,279.74, 605,009.61 and 122,818.62 is: 184,255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,279.74 : 605,009.61 = 122,818.62 : x
  2. Step 2: Convert to fraction form
    403,279.74/605,009.61 = 122,818.62/x
  3. Step 3: Cross multiply
    403,279.74x = 605,009.61 × 122,818.62
  4. Step 4: Simplify right side
    403,279.74x = 74,306,445,386.94
  5. Step 5: Solve for x
    x = 74,306,445,386.94/403,279.74
  6. Step 6: Final answer
    x = 184,255.34

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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.