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Finding the Fourth Proportional to 397,474.68, 548,353.20 and 225,356.40

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Solution

The fourth proportional to 397,474.68, 548,353.20 and 225,356.40 is: 310,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,474.68 : 548,353.20 = 225,356.40 : x
  2. Step 2: Convert to fraction form
    397,474.68/548,353.20 = 225,356.40/x
  3. Step 3: Cross multiply
    397,474.68x = 548,353.20 × 225,356.40
  4. Step 4: Simplify right side
    397,474.68x = 123,574,903,080.48
  5. Step 5: Solve for x
    x = 123,574,903,080.48/397,474.68
  6. Step 6: Final answer
    x = 310,900.06

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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.