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Finding the Fourth Proportional to 223,477.30, 308,404.72 and 121,509.60

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Solution

The fourth proportional to 223,477.30, 308,404.72 and 121,509.60 is: 167,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,477.30 : 308,404.72 = 121,509.60 : x
  2. Step 2: Convert to fraction form
    223,477.30/308,404.72 = 121,509.60/x
  3. Step 3: Cross multiply
    223,477.30x = 308,404.72 × 121,509.60
  4. Step 4: Simplify right side
    223,477.30x = 37,474,134,211.97
  5. Step 5: Solve for x
    x = 37,474,134,211.97/223,477.30
  6. Step 6: Final answer
    x = 167,686.54

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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.