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Finding the Fourth Proportional to 272,999.89, 409,532.63 and 258,069.97

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Solution

The fourth proportional to 272,999.89, 409,532.63 and 258,069.97 is: 387,135.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,999.89 : 409,532.63 = 258,069.97 : x
  2. Step 2: Convert to fraction form
    272,999.89/409,532.63 = 258,069.97/x
  3. Step 3: Cross multiply
    272,999.89x = 409,532.63 × 258,069.97
  4. Step 4: Simplify right side
    272,999.89x = 105,688,072,135.63
  5. Step 5: Solve for x
    x = 105,688,072,135.63/272,999.89
  6. Step 6: Final answer
    x = 387,135.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.