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Finding the Fourth Proportional to 398,663.83, 550,202.76 and 226,607.68

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Solution

The fourth proportional to 398,663.83, 550,202.76 and 226,607.68 is: 312,745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,663.83 : 550,202.76 = 226,607.68 : x
  2. Step 2: Convert to fraction form
    398,663.83/550,202.76 = 226,607.68/x
  3. Step 3: Cross multiply
    398,663.83x = 550,202.76 × 226,607.68
  4. Step 4: Simplify right side
    398,663.83x = 124,680,168,222.18
  5. Step 5: Solve for x
    x = 124,680,168,222.18/398,663.83
  6. Step 6: Final answer
    x = 312,745.13

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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.