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Finding the Fourth Proportional to 223,603.92, 308,577.06 and 121,631.40

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Solution

The fourth proportional to 223,603.92, 308,577.06 and 121,631.40 is: 167,853.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,603.92 : 308,577.06 = 121,631.40 : x
  2. Step 2: Convert to fraction form
    223,603.92/308,577.06 = 121,631.40/x
  3. Step 3: Cross multiply
    223,603.92x = 308,577.06 × 121,631.40
  4. Step 4: Simplify right side
    223,603.92x = 37,532,659,815.68
  5. Step 5: Solve for x
    x = 37,532,659,815.68/223,603.92
  6. Step 6: Final answer
    x = 167,853.32

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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.