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Finding the Fourth Proportional to 401,790.80, 554,453.84 and 220,505.74

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Solution

The fourth proportional to 401,790.80, 554,453.84 and 220,505.74 is: 304,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,790.80 : 554,453.84 = 220,505.74 : x
  2. Step 2: Convert to fraction form
    401,790.80/554,453.84 = 220,505.74/x
  3. Step 3: Cross multiply
    401,790.80x = 554,453.84 × 220,505.74
  4. Step 4: Simplify right side
    401,790.80x = 122,260,254,285.04
  5. Step 5: Solve for x
    x = 122,260,254,285.04/401,790.80
  6. Step 6: Final answer
    x = 304,288.34

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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.