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Finding the Fourth Proportional to 400,866.17, 601,348.77 and 130,987.94

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Solution

The fourth proportional to 400,866.17, 601,348.77 and 130,987.94 is: 196,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,866.17 : 601,348.77 = 130,987.94 : x
  2. Step 2: Convert to fraction form
    400,866.17/601,348.77 = 130,987.94/x
  3. Step 3: Cross multiply
    400,866.17x = 601,348.77 × 130,987.94
  4. Step 4: Simplify right side
    400,866.17x = 78,769,438,107.21
  5. Step 5: Solve for x
    x = 78,769,438,107.21/400,866.17
  6. Step 6: Final answer
    x = 196,498.09

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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.