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Finding the Fourth Proportional to 397,477.68, 548,357.34 and 225,359.40

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Solution

The fourth proportional to 397,477.68, 548,357.34 and 225,359.40 is: 310,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,477.68 : 548,357.34 = 225,359.40 : x
  2. Step 2: Convert to fraction form
    397,477.68/548,357.34 = 225,359.40/x
  3. Step 3: Cross multiply
    397,477.68x = 548,357.34 × 225,359.40
  4. Step 4: Simplify right side
    397,477.68x = 123,577,481,128.00
  5. Step 5: Solve for x
    x = 123,577,481,128.00/397,477.68
  6. Step 6: Final answer
    x = 310,904.20

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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.