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Finding the Fourth Proportional to 223,645.72, 308,624.07 and 121,668.58

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Solution

The fourth proportional to 223,645.72, 308,624.07 and 121,668.58 is: 167,898.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,645.72 : 308,624.07 = 121,668.58 : x
  2. Step 2: Convert to fraction form
    223,645.72/308,624.07 = 121,668.58/x
  3. Step 3: Cross multiply
    223,645.72x = 308,624.07 × 121,668.58
  4. Step 4: Simplify right side
    223,645.72x = 37,549,850,970.82
  5. Step 5: Solve for x
    x = 37,549,850,970.82/223,645.72
  6. Step 6: Final answer
    x = 167,898.81

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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.