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Finding the Fourth Proportional to 223,367.72, 308,242.26 and 121,390.76

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Solution

The fourth proportional to 223,367.72, 308,242.26 and 121,390.76 is: 167,516.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,367.72 : 308,242.26 = 121,390.76 : x
  2. Step 2: Convert to fraction form
    223,367.72/308,242.26 = 121,390.76/x
  3. Step 3: Cross multiply
    223,367.72x = 308,242.26 × 121,390.76
  4. Step 4: Simplify right side
    223,367.72x = 37,417,762,205.52
  5. Step 5: Solve for x
    x = 37,417,762,205.52/223,367.72
  6. Step 6: Final answer
    x = 167,516.43

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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.