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Finding the Fourth Proportional to 223,878.77, 308,951.38 and 121,903.98

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Solution

The fourth proportional to 223,878.77, 308,951.38 and 121,903.98 is: 168,226.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,878.77 : 308,951.38 = 121,903.98 : x
  2. Step 2: Convert to fraction form
    223,878.77/308,951.38 = 121,903.98/x
  3. Step 3: Cross multiply
    223,878.77x = 308,951.38 × 121,903.98
  4. Step 4: Simplify right side
    223,878.77x = 37,662,403,011.35
  5. Step 5: Solve for x
    x = 37,662,403,011.35/223,878.77
  6. Step 6: Final answer
    x = 168,226.78

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1.5x scale

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.