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Finding the Fourth Proportional to 400,858.80, 601,288.20 and 190,906.80

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Solution

The fourth proportional to 400,858.80, 601,288.20 and 190,906.80 is: 286,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,858.80 : 601,288.20 = 190,906.80 : x
  2. Step 2: Convert to fraction form
    400,858.80/601,288.20 = 190,906.80/x
  3. Step 3: Cross multiply
    400,858.80x = 601,288.20 × 190,906.80
  4. Step 4: Simplify right side
    400,858.80x = 114,790,006,139.76
  5. Step 5: Solve for x
    x = 114,790,006,139.76/400,858.80
  6. Step 6: Final answer
    x = 286,360.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.