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Finding the Fourth Proportional to 404,709.28, 558,499.62 and 223,421.45

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Solution

The fourth proportional to 404,709.28, 558,499.62 and 223,421.45 is: 308,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,709.28 : 558,499.62 = 223,421.45 : x
  2. Step 2: Convert to fraction form
    404,709.28/558,499.62 = 223,421.45/x
  3. Step 3: Cross multiply
    404,709.28x = 558,499.62 × 223,421.45
  4. Step 4: Simplify right side
    404,709.28x = 124,780,794,924.85
  5. Step 5: Solve for x
    x = 124,780,794,924.85/404,709.28
  6. Step 6: Final answer
    x = 308,322.05

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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.