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Finding the Fourth Proportional to 474,221.58, 654,485.37 and 311,015.22

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Solution

The fourth proportional to 474,221.58, 654,485.37 and 311,015.22 is: 429,240.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,221.58 : 654,485.37 = 311,015.22 : x
  2. Step 2: Convert to fraction form
    474,221.58/654,485.37 = 311,015.22/x
  3. Step 3: Cross multiply
    474,221.58x = 654,485.37 × 311,015.22
  4. Step 4: Simplify right side
    474,221.58x = 203,554,911,337.33
  5. Step 5: Solve for x
    x = 203,554,911,337.33/474,221.58
  6. Step 6: Final answer
    x = 429,240.09

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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.