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Finding the Fourth Proportional to 397,298.90, 548,295.82 and 225,230.60

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Solution

The fourth proportional to 397,298.90, 548,295.82 and 225,230.60 is: 310,831.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,298.90 : 548,295.82 = 225,230.60 : x
  2. Step 2: Convert to fraction form
    397,298.90/548,295.82 = 225,230.60/x
  3. Step 3: Cross multiply
    397,298.90x = 548,295.82 × 225,230.60
  4. Step 4: Simplify right side
    397,298.90x = 123,492,996,516.09
  5. Step 5: Solve for x
    x = 123,492,996,516.09/397,298.90
  6. Step 6: Final answer
    x = 310,831.46

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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.