Home / 305,750.73-421,938.96-178,401.72

Finding the Fourth Proportional to 305,750.73, 421,938.96 and 178,401.72

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Solution

The fourth proportional to 305,750.73, 421,938.96 and 178,401.72 is: 246,196.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,750.73 : 421,938.96 = 178,401.72 : x
  2. Step 2: Convert to fraction form
    305,750.73/421,938.96 = 178,401.72/x
  3. Step 3: Cross multiply
    305,750.73x = 421,938.96 × 178,401.72
  4. Step 4: Simplify right side
    305,750.73x = 75,274,636,199.01
  5. Step 5: Solve for x
    x = 75,274,636,199.01/305,750.73
  6. Step 6: Final answer
    x = 246,196.10

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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.