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Finding the Fourth Proportional to 261,951.57, 392,887.26 and 84,440.07

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Solution

The fourth proportional to 261,951.57, 392,887.26 and 84,440.07 is: 126,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,951.57 : 392,887.26 = 84,440.07 : x
  2. Step 2: Convert to fraction form
    261,951.57/392,887.26 = 84,440.07/x
  3. Step 3: Cross multiply
    261,951.57x = 392,887.26 × 84,440.07
  4. Step 4: Simplify right side
    261,951.57x = 33,175,427,736.51
  5. Step 5: Solve for x
    x = 33,175,427,736.51/261,951.57
  6. Step 6: Final answer
    x = 126,647.18

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1.5x scale

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.