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Finding the Fourth Proportional to 272,602.89, 375,701.63 and 221,783.90

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Solution

The fourth proportional to 272,602.89, 375,701.63 and 221,783.90 is: 305,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,602.89 : 375,701.63 = 221,783.90 : x
  2. Step 2: Convert to fraction form
    272,602.89/375,701.63 = 221,783.90/x
  3. Step 3: Cross multiply
    272,602.89x = 375,701.63 × 221,783.90
  4. Step 4: Simplify right side
    272,602.89x = 83,324,569,750.33
  5. Step 5: Solve for x
    x = 83,324,569,750.33/272,602.89
  6. Step 6: Final answer
    x = 305,662.83

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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.