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Finding the Fourth Proportional to 400,855.80, 601,283.70 and 190,903.80

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Solution

The fourth proportional to 400,855.80, 601,283.70 and 190,903.80 is: 286,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,855.80 : 601,283.70 = 190,903.80 : x
  2. Step 2: Convert to fraction form
    400,855.80/601,283.70 = 190,903.80/x
  3. Step 3: Cross multiply
    400,855.80x = 601,283.70 × 190,903.80
  4. Step 4: Simplify right side
    400,855.80x = 114,787,343,208.06
  5. Step 5: Solve for x
    x = 114,787,343,208.06/400,855.80
  6. Step 6: Final answer
    x = 286,355.70

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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.