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Finding the Fourth Proportional to 223,309, 308,166.58 and 122,707.72

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Solution

The fourth proportional to 223,309, 308,166.58 and 122,707.72 is: 169,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,309 : 308,166.58 = 122,707.72 : x
  2. Step 2: Convert to fraction form
    223,309/308,166.58 = 122,707.72/x
  3. Step 3: Cross multiply
    223,309x = 308,166.58 × 122,707.72
  4. Step 4: Simplify right side
    223,309x = 37,814,418,412.00
  5. Step 5: Solve for x
    x = 37,814,418,412.00/223,309
  6. Step 6: Final answer
    x = 169,336.74

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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.