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Finding the Fourth Proportional to 223,319.70, 308,177.69 and 122,715.54

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Solution

The fourth proportional to 223,319.70, 308,177.69 and 122,715.54 is: 169,345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,319.70 : 308,177.69 = 122,715.54 : x
  2. Step 2: Convert to fraction form
    223,319.70/308,177.69 = 122,715.54/x
  3. Step 3: Cross multiply
    223,319.70x = 308,177.69 × 122,715.54
  4. Step 4: Simplify right side
    223,319.70x = 37,818,191,644.30
  5. Step 5: Solve for x
    x = 37,818,191,644.30/223,319.70
  6. Step 6: Final answer
    x = 169,345.52

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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.