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Finding the Fourth Proportional to 261,901.76, 393,076.32 and 104,240.96

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Solution

The fourth proportional to 261,901.76, 393,076.32 and 104,240.96 is: 156,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,901.76 : 393,076.32 = 104,240.96 : x
  2. Step 2: Convert to fraction form
    261,901.76/393,076.32 = 104,240.96/x
  3. Step 3: Cross multiply
    261,901.76x = 393,076.32 × 104,240.96
  4. Step 4: Simplify right side
    261,901.76x = 40,974,652,950.07
  5. Step 5: Solve for x
    x = 40,974,652,950.07/261,901.76
  6. Step 6: Final answer
    x = 156,450.47

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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.