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Finding the Fourth Proportional to 404,711.20, 558,498.40 and 223,423.20

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Solution

The fourth proportional to 404,711.20, 558,498.40 and 223,423.20 is: 308,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,711.20 : 558,498.40 = 223,423.20 : x
  2. Step 2: Convert to fraction form
    404,711.20/558,498.40 = 223,423.20/x
  3. Step 3: Cross multiply
    404,711.20x = 558,498.40 × 223,423.20
  4. Step 4: Simplify right side
    404,711.20x = 124,781,499,722.88
  5. Step 5: Solve for x
    x = 124,781,499,722.88/404,711.20
  6. Step 6: Final answer
    x = 308,322.33

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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.