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Finding the Fourth Proportional to 261,453.69, 392,051.07 and 92,948.78

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Solution

The fourth proportional to 261,453.69, 392,051.07 and 92,948.78 is: 139,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,453.69 : 392,051.07 = 92,948.78 : x
  2. Step 2: Convert to fraction form
    261,453.69/392,051.07 = 92,948.78/x
  3. Step 3: Cross multiply
    261,453.69x = 392,051.07 × 92,948.78
  4. Step 4: Simplify right side
    261,453.69x = 36,440,669,634.32
  5. Step 5: Solve for x
    x = 36,440,669,634.32/261,453.69
  6. Step 6: Final answer
    x = 139,377.15

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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.