Home / 400,909.31-553,255.07-219,627.80

Finding the Fourth Proportional to 400,909.31, 553,255.07 and 219,627.80

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Solution

The fourth proportional to 400,909.31, 553,255.07 and 219,627.80 is: 303,086.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,909.31 : 553,255.07 = 219,627.80 : x
  2. Step 2: Convert to fraction form
    400,909.31/553,255.07 = 219,627.80/x
  3. Step 3: Cross multiply
    400,909.31x = 553,255.07 × 219,627.80
  4. Step 4: Simplify right side
    400,909.31x = 121,510,189,998.53
  5. Step 5: Solve for x
    x = 121,510,189,998.53/400,909.31
  6. Step 6: Final answer
    x = 303,086.48

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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.