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Finding the Fourth Proportional to 223,455.76, 308,375.04 and 121,488.08

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Solution

The fourth proportional to 223,455.76, 308,375.04 and 121,488.08 is: 167,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,455.76 : 308,375.04 = 121,488.08 : x
  2. Step 2: Convert to fraction form
    223,455.76/308,375.04 = 121,488.08/x
  3. Step 3: Cross multiply
    223,455.76x = 308,375.04 × 121,488.08
  4. Step 4: Simplify right side
    223,455.76x = 37,463,891,844.88
  5. Step 5: Solve for x
    x = 37,463,891,844.88/223,455.76
  6. Step 6: Final answer
    x = 167,656.86

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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.