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Finding the Fourth Proportional to 261,640.50, 392,519.25 and 95,428.50

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Solution

The fourth proportional to 261,640.50, 392,519.25 and 95,428.50 is: 143,164.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,640.50 : 392,519.25 = 95,428.50 : x
  2. Step 2: Convert to fraction form
    261,640.50/392,519.25 = 95,428.50/x
  3. Step 3: Cross multiply
    261,640.50x = 392,519.25 × 95,428.50
  4. Step 4: Simplify right side
    261,640.50x = 37,457,523,248.63
  5. Step 5: Solve for x
    x = 37,457,523,248.63/261,640.50
  6. Step 6: Final answer
    x = 143,164.09

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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.