Home / 305,731.60-421,921.74-176,665.79

Finding the Fourth Proportional to 305,731.60, 421,921.74 and 176,665.79

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Solution

The fourth proportional to 305,731.60, 421,921.74 and 176,665.79 is: 243,805.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,731.60 : 421,921.74 = 176,665.79 : x
  2. Step 2: Convert to fraction form
    305,731.60/421,921.74 = 176,665.79/x
  3. Step 3: Cross multiply
    305,731.60x = 421,921.74 × 176,665.79
  4. Step 4: Simplify right side
    305,731.60x = 74,539,139,232.58
  5. Step 5: Solve for x
    x = 74,539,139,232.58/305,731.60
  6. Step 6: Final answer
    x = 243,805.81

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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.