Home / 223,209.43-308,031.25-121,236.88

Finding the Fourth Proportional to 223,209.43, 308,031.25 and 121,236.88

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Solution

The fourth proportional to 223,209.43, 308,031.25 and 121,236.88 is: 167,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,209.43 : 308,031.25 = 121,236.88 : x
  2. Step 2: Convert to fraction form
    223,209.43/308,031.25 = 121,236.88/x
  3. Step 3: Cross multiply
    223,209.43x = 308,031.25 × 121,236.88
  4. Step 4: Simplify right side
    223,209.43x = 37,344,748,462.58
  5. Step 5: Solve for x
    x = 37,344,748,462.58/223,209.43
  6. Step 6: Final answer
    x = 167,308.11

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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.