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Finding the Fourth Proportional to 397,395.07, 548,383.03 and 227,640.13

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Solution

The fourth proportional to 397,395.07, 548,383.03 and 227,640.13 is: 314,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,395.07 : 548,383.03 = 227,640.13 : x
  2. Step 2: Convert to fraction form
    397,395.07/548,383.03 = 227,640.13/x
  3. Step 3: Cross multiply
    397,395.07x = 548,383.03 × 227,640.13
  4. Step 4: Simplify right side
    397,395.07x = 124,833,984,238.99
  5. Step 5: Solve for x
    x = 124,833,984,238.99/397,395.07
  6. Step 6: Final answer
    x = 314,130.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.