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Finding the Fourth Proportional to 272,718.30, 409,733.55 and 243,849.90

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Solution

The fourth proportional to 272,718.30, 409,733.55 and 243,849.90 is: 366,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,718.30 : 409,733.55 = 243,849.90 : x
  2. Step 2: Convert to fraction form
    272,718.30/409,733.55 = 243,849.90/x
  3. Step 3: Cross multiply
    272,718.30x = 409,733.55 × 243,849.90
  4. Step 4: Simplify right side
    272,718.30x = 99,913,485,194.15
  5. Step 5: Solve for x
    x = 99,913,485,194.15/272,718.30
  6. Step 6: Final answer
    x = 366,361.50

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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.